Fewer trees were cut down in the Amazon rainforest this past year. Climate scientists say Brazil has done well, but deforestation is more than one nation's problem. Marco Werman talks with Dr William Laurance of the Smithsonian Institution.
Film director James Cameron wants to shine a light on a dangerous and environmentally damaging oil-extraction process in Canada. Anchor Lisa Mullins speaks with Cameron about his latest off-screen project.
The people of southern Sudan are set to vote in a referendum on independence next month. If the vote passes, some northern Sudanese who live in the south fear they may no longer be welcome. Correspondent Sean Carberry reports from southern Sudan.