日批在线视频_内射毛片内射国产夫妻_亚洲三级小视频_在线观看亚洲大片短视频_女性向h片资源在线观看_亚洲最大网

WORLD> Global General
NASA warming scientist: 'This is the last chance'
(Agencies)
Updated: 2008-06-24 11:46

WASHINGTON - Exactly 20 years after warning America about global warming, a top NASA scientist said the situation has gotten so bad that the world's only hope is drastic action.

Jim Hansen, left, a leading researcher on global warming, talks with House Select Energy Independence and Global Warming Committee Chairman Rep. Edward Markey, D-Mass., right, prior to a briefing on global warming on Capitol Hill in Washington, Monday, June 23, 2008. [Agencies]

James Hansen told Congress on Monday that the world has long passed the "dangerous level" for greenhouse gases in the atmosphere and needs to get back to 1988 levels. He said Earth's atmosphere can only stay this loaded with man-made carbon dioxide for a couple more decades without changes such as mass extinction, ecosystem collapse and dramatic sea level rises.

"We're toast if we don't get on a very different path," Hansen, director of the Goddard Institute of Space Sciences who is sometimes called the godfather of global warming science, told The Associated Press. "This is the last chance."

Related readings:
 Don't turn a blind eye to all the global-warming warnings
 Global warming rushes timing of spring
 Greenhouse gases highest for 800,000 years
 G8 ministers endorse greenhouse gas cuts by 2050

Hansen brought global warming home to the public in June 1988 during a Washington heat wave, telling a Senate hearing that global warming was already here. To mark the anniversary, he testified before the House Select Committee on Energy Independence and Global Warming where he was called a prophet, and addressed a luncheon at the National Press Club where he was called a hero by former Sen. Tim Wirth, D-Colo., who headed the 1988 hearing.

To cut emissions, Hansen said coal-fired power plants that don't capture carbon dioxide emissions shouldn't be used in the United States after 2025, and should be eliminated in the rest of the world by 2030. That carbon capture technology is still being developed and not yet cost efficient for power plants.

Burning fossil fuels like coal is the chief cause of man-made greenhouse gases. Hansen said the Earth's atmosphere has got to get back to a level of 350 parts of carbon dioxide per million. Last month, it was 10 percent higher: 386.7 parts per million.

King penguins, that feed on fish and squid at the northern edges of Antarctica, are seen in this undated handout photo. King penguins are threatened by global warming, which is cutting down their food supply, researchers reported on February 11, 2008. [Agencies]

Hansen said he'll testify on behalf of British protesters against new coal-fired power plants. Protesters have chained themselves to gates and equipment at sites of several proposed coal plants in England.

"The thing that I think is most important is to block coal-fired power plants," Hansen told the luncheon. "I'm not yet at the point of chaining myself but we somehow have to draw attention to this."

Frank Maisano, a spokesman for many US utilities, including those trying to build new coal plants, said while Hansen has shown foresight as a scientist, his "stop them all approach is very simplistic" and shows that he is beyond his level of expertise.

The year of Hansen's original testimony was the world's hottest year on record. Since then, 14 years have been hotter, according to the National Oceanic and Atmospheric Administration.

A dead stork is seen on dried-up rice fields in Baan Ban village in Ayuthaya province, about 95 km (59 miles) north of Bangkok April 1, 2008. [Agencies]

Two decades later, Hansen spent his time on the question of whether it's too late to do anything about it. His answer: There's still time to stop the worst, but not much time.

"We see a tipping point occurring right before our eyes," Hansen told the AP before the luncheon. "The Arctic is the first tipping point and it's occurring exactly the way we said it would."

Hansen, echoing work by other scientists, said that in five to 10 years, the Arctic will be free of sea ice in the summer.

Longtime global warming skeptic Sen. James Inhofe, R-Okla., citing a recent poll, said in a statement, "Hansen, (former Vice President) Gore and the media have been trumpeting man-made climate doom since the 1980s. But Americans are not buying it."

But Rep. Ed Markey, D-Mass., committee chairman, said, "Dr. Hansen was right. Twenty years later, we recognize him as a climate prophet."

主站蜘蛛池模板: 91久久久久久久 | 成年人的黄色片 | 日本三级久久久 | 男人午夜网站 | 天天干夜夜艹 | 久久视频在线免费观看 | 激情综合一区二区三区 | 日韩一区在线视频 | 人人人超碰 | 激情天堂 | av在线播放地址 | 91高清免费观看 | 一级黄在线观看 | 福利在线看 | 少妇高潮一区二区三区99 | 亚洲影院在线 | 欧美精品久久久久久久久老牛影院 | 成人欧美精品 | 亚洲最大免费视频 | av手机在线播放 | 欧美三级视频在线观看 | 成人免费播放 | 欧美尻逼视频 | 国产一区二区视频在线观看 | 国产视频91在线 | 欧美成人极品 | 亚洲欧洲久久 | 国产91精品久久久 | 国产成年人 | 清清草在线视频 | 欧美日韩三级在线观看 | 蜜臀久久精品久久久久 | 日本中文字幕有码 | 中文字幕第5页 | 成人激情视频 | 亚洲色图图片 | 久久夜视频 | 永久中文字幕 | 久久久久黄色片 | 日本黄色网址大全 | 中文字幕成人 |