"President Barack Obama met other world leaders in a last push for a new global climate deal on Friday, after negotiators failed to reach a deal on carbon cuts in all-night talks."

"Up to a fifth of all species of animals and plants risk extinction even if the world manages to limit global warming to levels widely viewed as safe, the head of the Convention on Biological Diversity said."

"COPENHAGEN -- President Obama told leaders of 193 nations here Friday that their collective will to address climate change "hangs in the balance" and urged both developed and developing countries to accept a climate change agreement he acknowledged was far from perfect."

"A definitive step toward providing legal remedies for the effects of climate change could occur before either an international treaty or legislative accord can be reached, according to attorneys tracking the issue in the courts."

"In a speech to more than 100 heads of state, the president outlines the elements of accord: commitments to limit emissions, a way of monitoring those pledges and aid to help poor nations adapt."

"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 an agreement to prevent two years of wasted effort -- and a 10-day meeting -- from ending in total collapse."

"A visibly angry Barack Obama threw down the gauntlet at China and other developing nations Friday, declaring that the time has come to 'not to talk but to act' on climate change. Emerging from a multinational meeting boycotted by Chinese Chinese Premier Wen Jiabao, Obama warned delegates that U.S. offers of funding for poor nations would remain on the table 'if and only if' developing nations, including China, agreed to international monitoring of their greenhouse gas emissions."

"COPENHAGEN -- Mayors of some of the world's largest cities flexed their muscle at the United Nations climate talks Wednesday, warning that 'billions of people' are prepared to cut emissions far beyond whatever agreement world leaders may ink this week."

"In a little more than a year, a regional push to cap greenhouse gases has raised millions for Maryland energy programs, with supporters calling it a model for easing climate change on a national or even global scale."

"Negotiators at the United Nations climate summit scrambled Wednesday to bridge multibillion-dollar disagreements as President Barack Obama and other world leaders prepared to descend on the Danish capital Friday." ... "US Secretary of State of State Hillary Clinton Thursday proposed that major economies including the US come up with $100 billion a year over the next decade for developing nations, in an eleventh-hour effort to break an impasse." Secretary of State Hillary Clinton arrived in Copenhagen with new offers of conditional aid, but it was unclear whether this would be enough to break the logjam.

"The White House is promoting a $5 billion increase in tax breaks for clean energy manufacturing in hopes of contributing to job growth and expanded use of renewable energy."

"President Obama will not arrive at the Copenhagen climate summit until Friday, its final day, but he worked the phones Monday to push world leaders to cut a deal on a new global-warming agreement."

"Africa contributes the least to global warming, but stands to suffer the most. That is the case African leaders are making at U.N. climate talks in Copenhagen. ... But ... daily survival remains the focus of many Africans."

"Former US vice president and environmental activist Al Gore called Tuesday for world leaders to meet in Mexico City in July to complete a climate treaty under negotiation in Copenhagen."

"For more than 300 years, residents of Colombia's Pacific Coast area of Tumaco have mostly been left alone to fish or grow bananas .... But in recent years, the peace has been disturbed by new security threats, aggravated by climate change."