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CO2 levels reach 400 parts per million

May 11, 2013 at 10:22 AM   |   Comments

WASHINGTON, May 11 (UPI) -- The amount of carbon dioxide levels in the Earth's atmosphere reached 400 parts per million, prompting calls for a switch to clean technology.

The high levels of carbon dioxide -- a man-made greenhouse gas blamed for the raising temperatures on the planet over the years -- was recorded at a U.S. government agency lab situated on Hawaii's Mauna Loa volcano, the BBC reported.

Professor Sir Brian Hoskins, director of the Grantham Institute for Climate Change at Imperial College London, said governments should be looking into ways to tackle climate change.

"Before we started influencing the amount of carbon dioxide in the atmosphere, over the last million years it went between about 180 and 280 parts per million," Hoskins said. "Now, since the Industrial Revolution and more in the last 50 years, we've taken that level up by more than 40 percent to a level of 400 and that hasn't been seen on this planet for probably 4 million years."

While the European Union has been backing off the issue, the United States and China have agreed to co-operate on clean technology.

"But around the world, there are things happening, it's not all doom and gloom," he added. "China is doing a lot. Its latest five-year plan makes really great strides."

© 2013 United Press International, Inc. All Rights Reserved. Any reproduction, republication, redistribution and/or modification of any UPI content is expressly prohibited without UPI's prior written consent.
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