Video: President Obama addresses the leaders of nations attending the climate change conference in Copenhagen, urging countries to step up before it's too late. |
Video: President Obama, speaking at a Virginia Home Depot, calls on Congress to provide new incentives for Americans to make energy-efficiency retrofits to their homes. |
Video: Operation Free, a coalition of veterans and national security organizations, is traveling the country to spread its message about global warming's potential impact on national security. |
Video: For years, animal rights groups have alleged that the elephants in the Ringling Bros. and Barnum & Bailey Circus are mistreated. TODAY'S Natalie Morales goes behind the scenes with the circus elephants to find out more. |
Video: Former vice president and environmental icon rallies the troops and turns up the pressure on Obama to pass climate change law. |
Video: As the Copenhagen summit continues, global warming deniers are popping up all over. Perhaps they're right, says Jon Stewart, and it's all a conspiracy of those darned 'fat cat' scientists. |
Video: Chuck Leavell, keyboardist for The Rolling Stones and the cofounder of MNN, takes a tour of the Okefenokee National Wildlife Refuge. |
Video: Animal shelters in California are reporting a glut of abandoned Chihuahuas, leaving officials scrambling to find homes for all the tiny dogs. NBC's George Lewis reports. |
Video: MNN blogger Karl Burkart chats with Current TV about the politics of blogging at the climate summit. |
