North Korea conducts 3rd nuclear test, officials say

STORY HIGHLIGHTS

• NEW: "We believe North Korea conducted its third nuclear test," a South Korean official says


• A magnitude 4.9 disturbance takes place in area of previous underground nuclear tests


• There is little or no history of natural seismic activity in the area


• North Korea said last month it would carry out a third nuclear test

Hong Kong (CNN) -- North Korea appeared to have conducted its third underground nuclear bomb test Tuesday, officials and experts said, as U.S. seismologists reported activity centered near the site of the secretive regime's two previous atomic blasts.

Although North Korea had warned the world of its plans to carry out a new test in a vitriolic statement last month, the move is still likely to rattle the security situation in Northeast Asia as analysts try to determine the power and complexity of the device the North is thought to have detonated.

If confirmed, it would be the first nuclear test under the North's young leader, Kim Jong Un, who appears to be sticking closely to his father's policy of building up the isolated state's military deterrent to keep its foes at bay, shrugging off the resulting international condemnation and sanctions.

It also provided a provocative reminder of a seemingly intractable foreign policy challenge for President Barack Obama ahead of his State of the Union address later Tuesday.

The area around the reported epicenter of the magnitude 4.9 disturbance in northeastern North Korea has little or no history of earthquakes or natural seismic hazards, according to U.S. Geological Survey maps. The disturbance Tuesday took place at a depth of about 1 kilometer, the USGS said.

Officials suspect a nuclear test

Government officials and security analysts had little doubt about the cause of the quake.

"We believe North Korea conducted its third nuclear test," said Kim Min-seok, a spokesman for the South Korean defense ministry. He added that the magnitude of the "artificial tremor" suggested the size of the blast was in the order of 6 to 7 kilotons, more powerful than the North's two prior nuclear tests.

"If we come to a final conclusion that it is a nuclear test," he said, "then we will consult with the international community and respond strongly."

Japanese Chief Cabinet Secretary Yoshihide Suga said that based on past cases, "We believe there is a possibility that North Korea conducted a nuclear test."

There were no initial reports concerning the activity on the North's state-run Korean Central News Agency on Tuesday.

"It's a nuclear test," said Jeffrey Lewis, director of the East Asia Nonproliferation Program at the James Martin Center for Nonproliferation Studies at the Monterey Institute of International Studies. "That magnitude and that location -- it's awfully unlikely it's anything else."

In Washington, a senior administration official said the United States was working to confirm a nuclear test.

The China Earthquake Network Center said on its website that the seismic disturbance in North Korea was a "suspected explosion."

News breaks at a quiet time in Asia

The suspected test took place at a time when several East Asian countries, including China, North Korea's major ally, are observing public holidays for the Lunar New Year, which began Sunday.

It also comes ahead of the birthday on Saturday of Kim Jong Il, the former North Korean leader who died in December 2011 and was succeeded by his son, Kim Jong Un.

North Korea announced last month that it was planning a new nuclear test and more long-range rocket launches, all of which it said were part of a new phase of confrontation with the United States.

It made the threats two days after the United Nations Security Council had approved the broadening of sanctions on the reclusive, Stalinist regime in response to the North's launching of a long-range rocket in December that succeeded in putting a satellite in orbit.

Pyongyang said it carried out the launch for peaceful purposes, but it was widely considered to be a test of ballistic missile technology.

U.S. analysts say North Korea's first bomb test, in October 2006, produced an explosive yield at less than 1 kiloton (1,000 tons) of TNT. A second test in May 2009 is believed to have been about two kilotons, National Intelligence Director James Clapper told a Senate committee in 2012.

By comparison, the bomb the United States dropped on Hiroshima in 1945 was a 15-kiloton device.

In May 2012, North Korea said it had amended its constitution to formally proclaim itself a "nuclear state."

CNN's Jethro Mullen reported and wrote from Hong Kong. CNN's K.J. Kwon in Seoul, South Korea; Yoko Wakatsuki in Tokyo; Dana Ford and Matt Smith in Atlanta, Georgia; and Elise Labott in Washington contributed to this report. Journalist Connie Young in Beijing also contributed reporting.

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State of the Union guests reflect nation's hot-button issues

Several lawmakers are bringing special guests to President Obama's State of the Union address Tuesday night in order to make a statement.

Several lawmakers are bringing guests to help underscore the importance of gun control. More than 20 House Democrats are bringing guests who have been personally affected by gun violence. A bipartisan pair of Arizona lawmakers, meanwhile, will host former Rep. Gabrielle Giffords, D-Ariz., and her husband Mark Kelly.

Other lawmakers are bringing guests tied to issues like immigration and voting rights.

Below is a partial list of officials and the guests they are bringing. CBS News will update the list as more guests are confirmed:

First Lady Michelle Obama:

• Lt. Brian Murphy, who was wounded while responding to the Sikh Temple shooting last August in Oak Creek, Wisconsin. He was struck by 15 bullets.
• Cleopatra Cowley-Pendleton and Nathaniel Pendleton Sr., parents of 15-year-old Hadiya who was killed in a Chicago park.
• Desiline Victor, a 103-year-old Florida woman who waited in line for several hours to vote.
• Tim Cook, CEO of Apple.

House Minority Leader Pelosi:

• Mother and daughter from Newtown, Conn. The 4th grader sent Pelosi a letter asking for her support to strengthen gun laws in the wake of the Sandy Hook massacre.

Sen. John McCain, R-Ariz., and Rep. Ron Barber, D-Ariz.:

• Former Rep. Gabrielle Giffords, D-Ariz., and her husband Mark Kelly

Rep. Steve Stockman, R-Texas:

• Musician and gun advocate Ted Nugent

Sens. Richard Blumenthal, D-Conn., and Chris Murphy, D-Conn.:

• First Selectwoman Pat Llodra, a Republican and the Chief Executive Officer of Newtown
• Newtown Detectives Jason Frank and Dan McAnaspie, two of several first responders who rushed to Sandy Hook Elementary School on the day of the tragedy

Rep. Luis Gutierrez, D-Ill.:

• Undocumented immigrant Gabino Sanchez. The South Carolina husband and father of two U.S. citizen children is fighting deportation. Sanchez entered the country when he was 15 years old and has been working and living peacefully in the U.S. ever since.

Sen. Dianne Feinstein, D-Calif.:

• Josh Stepakoff, who in 1999 was shot at the North Valley Jewish Community Center in Granada Hills, Calif. Stepakoff, now 20, is a student at California State University Northridge.

Sen. Frank Lautenberg, D-N.J.:

• Matt Gross, a New Jersey native who was shot in the head in 1997, at the age of 27. Gross was one of several victims wounded during a shooting attack on the observation deck of the Empire State Building.

More House Democrats bringing guests affected by gun violence:

Rep. Jim Langevin, R.I.

Rep. Keith Ellison, Minn.

Rep. Carolyn McCarthy, N.Y.

Rep. Rosa DeLauro, Conn.

Rep. David Cicilline, R.I.

Rep. Diana DeGette, Colo.

Rep. Tammy Duckworth, Ill.

Rep. Elizabeth Esty, Conn.

Rep. Lois Frankel, Fla.

Rep. Lujan Grisham, N.M.

Rep. Janice Hahn, Calif.

Rep. Jim Himes, Conn.

Rep. Alan Lowenthal, Calif.

Rep. Gloria Negrete-McLeod, Calif.

Rep. Eleanor Holmes Norton, D.C.

Rep. Ed Perlmutter, Colo.

Rep. Jan Schakowsky, Ill.

Rep. Brad Schneider, Ill.

Rep. Bobby Scott, Va.

Rep. Mike Thompson, Calif.

Rep. Krysten Sinema, Ariz.

Rep. Chris Van Hollen, Md.

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North Korea Says it Has Conducted a Nuclear Test

North Korea says it has successfully tested a miniaturized nuclear device Tuesday, according to state media.

A large tremor measured at magnitude 4.9 was detected in North Korea and governments in the region scrambled to determine whether it was a nuclear test that the North Korean regime has vowed to carry out despite international protests.

Official state media said the test was conducted in a safe manner and is aimed at coping with "outrageous" U.S. hostility that "violently" undermines the North's peaceful, sovereign rights to launch satellites. Unlike previous tests, North Korea used a powerful explosive nuclear bomb that is smaller and lighter, state media reported.

Japan's prime minister has called an urgent security meeting, according to chief government spokesman Yoshihide Suga, and South Korea raised its military alert level, the AP reported.

Suspicions were aroused when the U.S. Geological Survey said it had detected a magnitude 4.9 earthquake Tuesday in North Korea.

The Comprehensive Test Ban Treaty Organization told ABC News, "We confirm that a suspicious seismic event has taken place in North Korea."

"The event shows clear explosion-like characteristics and its location is roughly congruent with the 2006 and 2009 DPRK (North Korea) nuclear tests," said Tibor Toth, executive secretary of the organization.

North Korea Threatens More Nuclear Tests, Warns U.S. Watch Video

"If confirmed as a nuclear test, this act would constitute a clear threat to international peace and security, and challenges efforts made to strengthen global nuclear disarmament and non-proliferation," Toth said in a statement on the organization's web site.

Kim Min-seok, a South Korean Defense Ministry spokesman, told reporters that North Korea informed United States and China that it intended to carry out another nuclear test, according to the AP. But U.S. officials did not respond to calls from ABC News Monday night.

The seismic force measured 10 kilotons, according to Min-seok.

"Now that's an absolutely huge explosion by conventional terms. It's a smallish, but not tiny explosion by nuclear terms. It's about two-thirds the size of the bomb that the U.S. dropped on Hiroshima," James Acton, a Senior Associate at the Carnegie Endowment for International Peace, told ABC News.

North Korea threatened in January to carry out a "higher-level" test following the successful Dec. 12 launch of a long range rocket. At the time, North Korea's leader Kim Jong-Un said his country's weapons tests were specifically targeting the United States.

The suspicious tremor comes just hours before President Obama is to give the State of the Union address, and it marks the first diplomatic test in the region for new Secretary of State John Kerry.

Also, South Korea's new president, Park Geun-hye, is scheduled to be sworn in on Feb. 25. One of North Korea's biggest holidays, Kim Jong-il's birthday, falls on Feb. 16.

China, North Korea's main ally in the region, has warned North Korea it would cut back severely needed food assistance if it carried out a test. Each year China donates approximately half of the food North Korea lacks to feed its people and half of all oil the country consumes.

Both of North Korea's previous tests used a plutonium-based method for making bomb fuel. The first was deemed a failure, the second only slightly less so. If the most recent test used HEU (highly enriched uranium), a far more difficult-to-detect method of producing bomb fuel, it would be a significant and worrisome step forward for North Korea's weapons program.

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Liver cancer survival time tripled by virus

The virus used in the vaccine that helped eradicate smallpox is now working its magic on liver cancer. A genetically engineered version of the vaccinia virus has trebled the average survival time of people with a severe form of liver cancer, with only mild, flu-like side effects.

Thirty people with hepatocellular carcinoma received three doses of the modified virus – code-named JX-594 – directly into their liver tumour over one month. Half the volunteers received a low dose of the virus, the other half a high dose. Members of the low and high-dose groups subsequently survived for, on average, 6.7 and 14.1 months respectively. By contrast, trials several years ago showed that sorafenib, the best existing medication for this cancer, prolonged life by only three months.

Two of the patients on the highest viral dose were still alive more than two years after the treatment. "It's a very substantial survival benefit," says Laurent Fischer, president of Jennerex, the company in San Francisco developing the treatment under the trade name Pexa-Vec.

Besides shrinking the primary tumour, the virus was able to spread to and shrink any secondary tumours outside the liver. "Some tumours disappeared completely, and most showed partial destruction on MRI scans," says David Kirn, head of the study at Jennerex. Moreover, the destruction was equally dramatic in the primary and secondary tumours.

"This clinical trial is an exciting step forward to help find a new way of treating cancers," says Alan Melcher of the University of Leeds, UK, who was not involved in the study. "It helps demonstrate the cancer-fighting potential of viruses, which have relatively few side effects compared with traditional chemo or radiotherapy," he says. "If it proves effective in larger trials, it could be available to patients within five years."

The fact that the virus appears able to spread to secondary tumours suggests that simply injecting the virus into the bloodstream may be effective. A trial to compare this treatment with injecting the virus directly into a tumour is under way.

Targeted at cancer

The virus has had a gene coding for an enzyme called thymidine kinase snipped out. The enzyme enables the virus to recognise and infect dividing cells. By removing the gene, the virus's developers have reduced the likelihood of healthy dividing cells being infected.

Instead, the virus exclusively attacks cancerous tissue, by targeting two genes that have increased activity in tumour cells. One genes is associated with an epidermal growth factor receptor, which stimulates the cancer to grow. The other is associated with a vascular endothelial growth factor, which enables the cancer to recruit its own blood supply. The virus reduces the activity of both genes, causing the infected cancer cell to wither and die.

What's more, the virus carries extra genes to prod the body's own immune system into action against the cancer. One produces granulocyte colony stimulating factor, a protein that encourages production of extra white blood cells at sites of infection. The other produces a protein not naturally found in humans, called Lac-Z, that earmarks infected cells for destruction.

Fischer says that to date, more than 200 people have received the virus, which has also shown promise against other types of cancer, including those of the kidney and skin. But he warns that not everyone sees a benefit. "We know why patients respond, but not why they don't," he says.

Journal reference: Nature Medicine, DOI: 10.1038/nm.3089

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Tech giants summoned by Australia pricing inquiry

SYDNEY: Global technology giants Microsoft, Apple and Adobe were on Monday ordered to appear before a pricing inquiry examining the often-higher cost of tech goods in Australia compared with other economies.

The lower house committee holding the probe, which was launched last May, said it had summoned the trio to appear at a public hearing next month to explain why Australian customers paid more for the same products.

"The committee is looking at the impacts of prices charged to Australian consumers for IT products," it said in a statement.

"Australian consumers often pay much higher prices for hardware and software than people in other countries."

The inquiry was set up to examine claims by consumer advocacy groups of price discrimination for Australians on technology, with music, games, software, and gaming and computer hardware costing substantially more than elsewhere.

According to consumer lobby group Choice, Australians pay on average 73 percent more on iTunes downloads than the United States, 69 percent more on computer products and a staggering 232 percent more on PC game downloads.

Office software was on average 34 percent more expensive in Australia when compared with the United States, Choice said in its submission to the inquiry, with hardware coming in at 41 percent more expensive.

One software package was A$8,665 (US$8,939) more expensive to buy in Australia than the United States -- a gap that Choice described as "particularly unreasonable".

"For this amount, it would be cheaper to employ someone for 46 hours at the price of $21.30 per hour and fly them to the US and back at your expense -- twice," Choice said.

Choice only did comparisons to the United States and Britain; the inquiry is examining discrepancies with these countries as well as with Asia-Pacific economies.

Apple and Microsoft have both made their own submissions to the committee, arguing that prices differed across jurisdictions due to a range of factors including freight, local taxes and duties and foreign exchange rates.

The Australian Information Industry Association, which represents Adobe and other major ICT firms, has submitted to the committee that the "costs of doing business in Australia are higher than in many other countries".

It pointed to retail rent costs and high wages as some of the main factors behind business costs in Australia being "5-10 percent higher than any other country... and these costs are passed onto consumers".

Apple and Microsoft both declined to comment when contacted by AFP while Adobe said it would "cooperate with the committee as we have done since the inquiry began".

- AFP/ir

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Almost famous: See celebs' early roles

By Henry Hanks, CNN

updated 5:05 PM EST, Thu February 7, 2013

Stars who started out like GoDaddy's geek

Jesse Heiman

Sylvester Stallone

John Travolta

Keanu Reeves

Courtney Cox

Matt LeBlanc

Tina Fey

Rainn Wilson

Megan Fox

Dean Winters

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New Englanders slowly recover from weekend blizzard

NEWPORT, R.I. Travel eased and life slowly returned to normal for most New Englanders after a massive blizzard, but many remained without power in cold and darkened homes and a forecast of rain brought a new worry: Weight piling up dangerously on roofs already burdened by heavy snow.

61 Photos

Powerful blizzard descends on Northeast

Play Video

Northeast sees record snow fall

The storm that slammed into the region with up to 3 feet of snow was blamed for at least 14 deaths in the Northeast and Canada, and brought some of the highest accumulations ever recorded. Still, coastal areas were largely spared catastrophic damage despite being lashed by strong waves and hurricane-force wind gusts at the height of the storm.

President Barack Obama declared a state of emergency for Connecticut, allowing federal aid to be used in recovery, and utilities in some hard-hit New England states predicted that the storm could leave some customers in the dark for days.

CBS News correspondent Miguel Bojorquez reports that Hamden, Conn., about 80 miles from New York City, experienced the deepest snow: 40 inches. The blizzard had dumped five inches of snow per hour.

Hundreds of people, their homes without heat or electricity, were forced to take refuge in emergency shelters set up in schools or other places.

"For all the complaining everyone does, people really came through," said Rich Dinsmore, 65, of Newport, R.I., who was staying at a Red Cross shelter set up in a middle school in Middletown after the power went out in his home on Friday.

Dinsmore, who has emphysema, was first brought by ambulance to a hospital after the medical equipment he relies on failed when the power went out and he had difficulty breathing.

"The police, the fire department, the state, the Red Cross, the volunteers, it really worked well," said the retired radio broadcaster and Army veteran.

Utility crews, some brought in from as far away as Georgia, Oklahoma and Quebec, raced to restore power to more than 300,000 customers -- down from 650,000 in eight states at the height of the storm. In hardest-hit Massachusetts, where some 234,000 customers remained without power on Sunday, officials said some of the outages might linger until Tuesday.

Driving bans were lifted and flights resumed at major airports in the region that had closed during the storm, though many flights were still canceled Sunday.

Boston recorded 24.9 inches of snow, making it the fifth-largest storm in the city since records were kept.

On eastern Long Island, which was slammed with as much as 30 inches of snow, hundreds of snowplows and other heavy equipment were sent in Sunday to clear ice- and drift-covered highways where hundreds of people and cars were abandoned during the height of the storm.

More than a third of all the state's snow-removal equipment was sent to the area, Gov. Andrew Cuomo said, including more than 400 plow trucks and more than 100 snow blowers, loaders and backhoes.

Play Video

Snow leaves Long Island Expressway commuters stranded

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Mass. town powerless after record snow storm

The National Weather Service was forecasting rain and warmer temperatures in the region on Monday -- which could begin melting some snow but also add considerable weight to snow already piled on roofs, posing the danger of collapse. Of greatest concern were flat or gently-sloped roofs and officials said people should try to clear them -- but only if they could do so safely.

"We don't recommend that people, unless they're young and experienced, go up on roofs," said Peter Judge, spokesman for the Massachusetts Emergency Management Agency.

Officials also continued to warn of carbon monoxide dangers in the wake of the storm.

In Boston, two people died Saturday after being overcome by carbon monoxide while sitting in running cars, including a teenager who went into the family car to stay warm while his father shoveled snow. The boy's name was not made public. In a third incident, two children were hospitalized but expected to recover.

A fire department spokesman said in each case, the tailpipes of the cars were clogged by snow.

Authorities also reminded homeowners to clear snow from heating vents to prevent carbon monoxide from seeping back into houses.

In Maine, the Penobscot County Sheriff's office said it recovered the body of a 75-year-old man who died after the pickup he was driving struck a tree and plunged into the Penobscot River during the storm. Investigators said Gerald Crommett apparently became disoriented while driving in the blinding snow.

Christopher Mahood, 23, of Germantown, N.Y., died after his tractor went off his driveway while he was plowing snow Friday night and rolled down a 15-foot embankment.

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Possible Dorner Sighting Leads to Store Evacuation

A Northridge, Calif., home improvement store was evacuated tonight because of a possible sighting of suspected cop-killer Christopher Dorner, just hours after police announced a $1 million reward for information leading to his arrest.

As helicopters hovered overhead and a command center was established, police searched the Lowe's store and eventually told shoppers they could leave, but could not take their cars out of the parking lot.

LAPD spokesman Gus Villanueva said the major response to the possible sighting was a precaution, but couldn't say whether Dorner was in the area.

The announcement of the $1 million reward today came as authorities in Big Bear, Calif., scaled back their search for Dorner, the disgruntled ex-cop who is suspected in three revenge killings.

"This is the largest local reward ever offered, to our knowledge," Los Angeles Police Chief Charlie Beck said at a news conference today. "This is an act of domestic terrorism. This is a man who has targeted those that we entrust to protect the public. His actions cannot go unanswered."

The money for the reward was pooled by businesses, government, local law enforcement leaders and individual donors, Beck said.

PHOTOS: Former LAPD Officer Suspected in Shootings

The reward comes on the fourth day of a manhunt for Dorner, who has left Southern California on edge after he allegedly went on a killing spree last week to avenge his firing from the police force. Dorner outlined his grievances in a 6,000 word so-called "manifesto" and said he will keep killing until the truth is known about his case.

Irvine Police Department/AP Photo

Manhunt for Alleged Cop Killer Heads to California Mountains Watch Video

Christopher Dorner Search: Officials Search for Ex-officer in the Mountains Watch Video

Dorner's threats have prompted the LAPD to provide more than 50 law enforcement families with security and surveillance detail, Beck said.

Authorities are chasing leads, however they declined to say where in order to not impede the investigation.

Dorner's burned-out truck was found Thursday near Big Bear Lake, a popular skiing destination located 80 miles northeast of Los Angeles.

Investigators found two AR-15 assault rifles in the burned-out truck Dorner abandoned, sources told ABC News.

The truck had a broken axle, which may be the reason he decided to set fire to it, the police sources said.

Full Coverage: Christopher Jordan Dorner

Officers have spent the past couple of days going door-to-door and searching vacant cabins. The manhunt was scaled back to 25 officers and one helicopter in the resort town today, according to the San Bernadino Sheriff's Office.

On Saturday, Beck announced he would reopen the investigation into Dorner's firing but said the decision was not made to "appease" the fugitive ex-cop.

"I feel we need to also publicly address Dorner's allegations regarding his termination of employment, and to do so I have directed our Professionals Standards Bureau and my Special Assistant for Constitutional Policing to completely review the Dorner complaint of 2007; To include a re-examination of all evidence and a re-interview of witnesses," Beck said. "We will also investigate any allegations made in his manifesto which were not included in his original complaint."

Dorner is suspected of killing Monica Quan and her fiancé Keith Lawrence last Sunday in their car in the parking lot of their Irvine, Calif., condominium complex. Both were struck with multiple gunshot wounds.

Quan's father, Randal Quan, was a retired captain with the LAPD and attorney who represented Dorner before a police review board that led to Dorner's dismissal from the force in 2008.

On Wednesday, after Dorner was identified as a suspect in the double murder, police believe he ambushed two Riverside police officers, killing one and wounding the other.

The next day, Randal Quan reported he received a taunting call from a man claiming to be Dorner who told him that he "should have done a better job of protecting his daughter," according to court documents documents.

Anyone with information leading to the arrest of Christopher Dorner is asked to call the LAPD task force at 213-486-6860.

ABC News' Dean Schabner, Jack Date, Pierre Thomas, Jason Ryan and Clayton Sandell and The Associated Press contributed to this report.

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Sooty ships may be geoengineering by accident

GEOENGINEERING is being tested - albeit inadvertently - in the north Pacific. Soot from oil-burning ships is dumping about 1000 tonnes of soluble iron per year across 6 million square kilometres of ocean, new research has revealed.

Fertilising the world's oceans with iron has been controversially proposed as a way of sucking carbon dioxide out of the atmosphere to curb global warming. Some geoengineers claim releasing iron into the sea will stimulate plankton blooms, which absorb carbon, but ocean processes are complex and difficult to monitor in tests.

"Experiments suggest you change the population of algae, causing a shift from fish-dominated to jellyfish-dominated ecosystems," says Alex Baker of the University of East Anglia, UK. Such concerns led the UN Convention on Biological Diversity (CBD) to impose a moratorium on geoengineering experiments in 2010.

The annual ship deposition is much larger, if less concentrated, than the iron released in field tests carried out before the moratorium was in place. Yet because ship emissions are not intended to alter ocean chemistry, they do not violate the moratorium, says Jim Thomas of the ETC Group, a think tank that consults for the CBD. "If you intentionally drove oil-burning ships back and forth as a geoengineering experiment, that would contravene it."

The new study, by Akinori Ito of the Japan Agency for Marine-Earth Science and Technology, is the first to quantify how shipping deposits iron in parts of the ocean normally deficient in it. Earlier models had assumed that only 1 to 2 per cent of the iron contained in aerosols, including shipping emissions, is soluble in seawater, so the remaining 98 to 99 percent would sink to the bottom without affecting ocean life. But Ito found that up to 80 per cent of the iron in shipping soot is soluble (Global Biogeochemical Cycles, doi.org/kdj). As this soot rapidly falls to the sea surface, it is likely to be fertilising the oceans.

In the high-latitude north Pacific - a region that is naturally iron-poor and therefore likely to be most affected by human deposits - ship emissions now account for 70 per cent of soluble iron from human activity, with the burning of biomass and coal accounting for the rest. Shipping's share will rise as traffic continues to grow and regulations restrict coal and biomass emissions.

Can we learn anything from this unintentional experiment? Baker thinks not. "The process isn't scientifically useful," he says, because the uncontrolled nature of the iron makes it difficult to draw meaningful comparisons.

The depositions are unlikely to be harmful at current levels, he says, but "given the uncertainties, I just don't know how much these iron emissions would have to increase before there was demonstrable harm to an ecosystem, or benefit in terms of carbon uptake, for that matter".

This article appeared in print under the headline "Ships inadvertently fertilise the oceans"

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Taiwan's "King of the Trees" fights for the forests

TAICHUNG, Taiwan: With his blue stetson and thick grey jacket, Lai Pei-yuan looks like a modern-day cowboy, but rather than raising cattle, he grows trees.

The 57-year-old Taiwanese entrepreneur made his fortune in transportation and property, but his real mission in life is to reinstate at least some of the forests that once covered most of the island.

"It was just a simple idea I had," said Lai, meeting AFP on a hillside near his native Taichung city in central Taiwan. "If I was to safeguard Taiwan, I would have to plant trees."

For the past three decades, Lai has bought and planted thousands of trees every year, often with his own hands.

Today his efforts can be seen in the form of 130 hectares (320 acres) of mountainsides near Taichung covered with 270,000 deep-rooted trees, representing indigenous species such as Taiwan incense cedar and cinnamomum micranthum.

"He's a legendary person," President Ma Ying-jeou said during a recent visit to Taichung, when he met and sipped coffee with Lai. "No one else in Taiwan has planted so many trees."

It is an endeavour that has cost him hundreds of millions of New Taiwan dollars (millions of US dollars), but it has helped him achieve fame as "King of the Trees."

He said he was inspired by seeing how rapid industrialisation laid waste to Taiwan in the post-war era of super-high growth.

"Many, many trees growing in the mountains were cut down and exported," Lai said.

It had begun under Japanese colonial rule from 1895 to 1945, when ancient trees were cut down in the name of progress, a process that continued until the closing years of the 20th century.

Only in 1989 did the Taiwanese authorities ban the logging of primeval forests, but by that time it was almost too late.

The results were devastating. In the course of the 20th century, forest coverage fell from 90 percent to 55 percent, according to one government survey.

Lai nevertheless saw it as an opportunity to build something that would leave a legacy for posterity.

"I had seen how companies prospered and declined. I felt I wanted to do something which could last for generations to come," he said.

Lai began his crusade for the trees when he was about 30, setting out every morning to plant trees on plots of land that he owned. Often his family would only see him after sunset. His children were puzzled.

"When my brother and I were young, we had no idea what Dad was doing. Our impression was that he was on the mountains all the time," his elder son Lai Chien-chung said.

Today, Lai Chien-chung sells coffee beans, grown in his father's forests, under the brandname "Coffee & Tree". He also opened his first coffee shop in downtown Taichung last year.

Around 95 percent of the profits from the coffee sales have been used to finance the maintenance of the forests and the planting of trees, Lai Chien-chung said.

To ensure sustainable management of his forests, Lai Pei-yuan pledges no deforestation and sell-off. Nor will he give the forests to his family after his death, he said. They will instead be managed by a non-profit foundation set up by Lai.

Meanwhile, he can take pleasure in the fact that others are following in his footsteps.

Since 2008, Taiwanese individuals, companies and government bodies have jointly planted more than 23,000 hectares of trees, according to Taiwan's forestry bureau as part of President Ma's iTaiwan projects launched in 2009.

- AFP/al

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