It took a long time for nations to set a speed limit on the road to a warming world.

Washington braced for a prolonged shutdown, the first in 17 years, this week after members of Congress failed to pass a budget.

Continued global warming could help create atmospheric conditions that are fertile breeding grounds for severe thunderstorms and tornadoes in the United States, a new study suggests.

Though legislation to promote energy efficiency remains in a holding pattern in the U.S.

A leaked early version of a major forthcoming report from the Intergovernmental Panel on Climate Change (IPCC), the United Nations-affiliated panel of scientists that is often cited as the world's

Replacing much of Australia's beef and lamb with kangaroo meat could significantly cut the continent's greenhouse gas emissions and save its native terrain. A recent study suggests phasing out some 7 million cattle and 36 million sheep from Australian rangelands

During his annual whirlwind tour of Clinton Foundation humanitarian projects in Africa, which ended Monday, former U.S. President Bill Clinton sat down with National Geographic News's David Braun in Kigali, Rwanda, for a conversation on how African leaders can unite to fight the energy, climate, and food crises and how the continent is so much more than the disasters that often define it in the media. (Hear the full interview.)