Old bubbles back global warming theory

Old bubbles back global warming theory: "Old bubbles back global warming theory


BY LAURAN NEERGAARD

ASSOCIATED PRESS


The drill head and ice core, drilled Nov. 30, 2002, at a research station in Antarctica. The core let scientists study greenhouse gases dating back 650,000 years. (Science magazine via Associated Press)

WASHINGTON -- There is more carbon dioxide in the atmosphere today than at any point during the last 650,000 years, says a new study that let scientists peer back in time at greenhouse gases that can help fuel global warming.

By analyzing tiny air bubbles preserved in Antarctic ice for millennia, a team of European researchers shows how people are dramatically influencing the buildup of these gases"