On Saturday, over 100,000 people marched in Copenhagen calling on world leaders to agree to a just climate policy. Leading the march was a delegation of indigenous leaders from communities on the front lines of climate change.

World Blog: In northern Kenya, tribesmen battle over dwindling resources. | Video

Hazra Bi wishes she could forget. But her damaged family is a living reminder of that December night 25 years ago when lethal gas leaked from a pesticide plant in Bhopal, India, in the worst industrial disaster the world

Sea levels are likely to rise by about 1.4m (4ft 6in) globally by 2100 as polar ice melts, according to a major review of climate change in Antarctica.

Climate has been a major driver of armed conflict in Africa, research shows - and future warming is likely to increase the number of deaths from war.

Fareed Zakaria, host of "Fareed Zakaria GPS" on CNN, says the U.S. needs China to help solve global problems. But it's difficult to tell whether President Obama got that message across during his visit, Zakaria writes. FULL STORY

We have an opportunity to make sure the genocide that continues in Darfur (a western province of Sudan) is top-of-mind during President Obama's upcoming trip to China. China is Sudan's largest trading partner and most important international backer.

PRESIDENT OBAMA: Thank you so much. Arigatou. Thank you very much. (Applause.) Good morning. It is a great honor to be in Tokyo -- the first stop on my first visit to Asia as President of the United States. (Applause.) Thank you. It is good to be

A majority of Canadians believe observing two minutes of silence on Remembrance Day should be mandatory rather than voluntary, a new poll finds

At a gleaming new research center outside Beijing, about 250 engineers and researchers from the ENN Group are trying to figure out how to make energy use less damaging to the world's climate.