The U.N. has created a save-the-world crowdfunding campaign, but critics say it faces colossal challenges to success.
Scientists expect global warming to impede forests' ability to absorb the Earth's carbon.
The changes in bee populations leading to the die-offs happened over the course of only a few decades, says the study's co-author.
As the world warms, the ice-free season in polar bears' Arctic habitats grows longer and longer.
Don't believe everything you see in graph form.
In what Vatican officials are calling "a heinous act," the Italian magazine "L'Espresso" leaked a draft of the hotly anticipated papal encyclical on the environment.
Scientists believe global warming has caused this change in polar bear food choices.
The seals have gathered information about global warming and glacier change over the last 11 years.
The Yupik people of Togiak are watching their world melt away from under their feet.
Traditional ways of life are getting harder
As he approaches his 96th birthday Lovelock is more convinced than ever of the need to change the way we look at Earth
The 10,000-year-old mass of ice will be gone in the next five years, scientists say.
"Climate change can no longer be denied, or ignored," the president says.
Scientists say the biggest extinction event ever was caused by comparable rate of cO2 emissions to those seen today.
EU statistics suggest UK is unlikely to meet 15% renewable energy target by 2020.
Maine's shrimp industry is suffering and its lobster catch is also in danger.
NASA pointed directly at human activity as the force driving the climatic changes
Governments will submit national plans for reining in greenhouse gas emissions by an informal deadline of March 31, 2015.
As world leaders gather in Peru, what to expect from the negotiations.