Like Franklin Delano Roosevelt, President elect Obama is facing tough economic times, and an industrial challenge. While Roosevelt mobilized industry to fight a war, Obama pledges to mobilize to battle climate change. The World's Jason Margolis has more.

Countries in Central and Eastern Europe are taking a new look at nuclear energy. Proponents say the construction of nuclear plants could provide greater energy independence while reducing emissions of greenhouse gases. The World's Gerry Hadden reports from the Czech Republic.

Anchor Lisa Mullins speaks with scientist and writer E.O. Wilson about biodiversity and the threat which human activity poses to it. A new report from the WWF finds that about a thousand species of plants and animals have been discovered during the past decade in areas around the Mekong River in Southeast Asia.

President-elect Obama has reportedly chosen Steven Chu to be his energy secretary. Chu is a Nobel Prize-winning physicist and an expert on alternative fuels and climate change. The World's Jason Margolis reports.

The answer to today's Geo Quiz is the three "range" states of the endangered mountain gorilla -- Rwanda, Uganda and the Democratic Republic of Congo (DRC). Anchor Marco Werman speaks with Jamie Kemsey of the International Gorilla Conservation Program in Rwanda.

Web extra: Hear Jamie Kemsey describe his first hand encounter with gorillas in Uganda (Bwindi Impenetrable National Park)

President-elect Obama introduced his national security team this week and climate change was mentioned prominently. The World's Jason Margolis examines how national security and the problem of global warming are linked.

Decades of clearing forests, overusing water resources, and climate change have brought desert conditions to what was once Chinese farmland. The World's Mary Kay Magistad reports from Ningxia, China.

About one in five Americans still doubt that the Earth is warming. Is this healthy skepticism or denial? The World's Jason Margolis reports on cultural denial around the globe.

President-elect Obama has made tackling global climate change a priority for his administration. But the Obama team doesn't have much time to get things moving. The World's Alex Gallafent reports.

China confirmed for the first time today that it's joined the United States as the top emitter of greenhouse gases. Part of the reason is the country's heavy reliance on coal. The World's Mary Kay Magistad visited one province that's been labeled China's least energy efficient -- Ningxia.

Smokestacks in Ningxia