A study published in the journal Science reports that the current level of carbon dioxide (CO2) in the atmosphere – about 390 parts per million – is higher today than at any time in measurable history — at least the last 2.1 million years. Previous peaks of CO2 were never more than 300 ppm over [...]

Barack Obama stepped into the chaotic final hours of the Copenhagen summit today saying he was convinced the world could act “boldly and decisively” on climate change. But his speech offered no indication America was ready to embrace bold measures, after world leaders had been working desperately against the clock to try to paper over [...]

By DAVID A. FAHRENTHOLD and JULIET EILPERIN The Washington Post Friday, December 18, 2009 What the heck is all this? This is a United Nations-run conference that was — originally — supposed to produce a new global agreement to reduce greenhouse-gas emissions because what happens after 2012 under the Kyoto Protocol is uncertain. There is [...]

(CNN) — U.S. Secretary of State Hillary Clinton arrived in Copenhagen early Thursday morning amid concerns that time is running out at the climate change summit for world leaders to agree a deal to combat global warming. Yvo de Boer, the U.N.’s top climate official, admitted Wednesday evening that negotiations had unexpectedly stalled and said [...]

WASHINGTON (Reuters) – President Barack Obama heads to Copenhagen on Thursday to help secure a U.N. climate pact, staking his credibility on an as yet elusive deal that has ramifications for him at home and on the world stage. Obama is expected to arrive in the Danish capital on Friday morning, joining about 120 other [...]

By Aubrey Ann Parker Free Press guest blogger When it comes to wind power, Americans have all kinds of excuses not to use it. “It’s too expensive” or “Not in my backyard” (NIMBY: referencing that they don’t want a tall, skinny, white turbine obstructing their beautiful view of the ocean or the mountains.) Let me [...]

When world leaders gather in Copenhagen on Monday for negotiations on a new agreement to combat the threat of catastrophic climate change, their success or failure will ride on economics, not environmental science. Theoretically, the two-week conference will focus on limiting the heat-trapping gas emissions blamed for global warming. But its major debates will all [...]

BBC News Three UK groups studying climate change have issued an unprecedented statement about the dangers of failing to cut emissions of greenhouse gases. The Royal Society, Met Office, and Natural Environment Research Council say the science underpinning climate change is more alarming than ever. They say the 2007 UK floods, 2003 heatwave in Europe [...]