Counting trees in the Amazon, a recap on the Paris talks, and China's pollution

Counting trees in the Amazon, a recap on the Paris talks, and China's pollution
Counting trees in the Amazon, a recap on the Paris talks, and China's pollution

Counting trees in the Amazon, a recap on the Paris talks, and China's pollution

The world's leaders come to a historic agreement to fight climate change, China grapples with pollution, and we talk to scientists about the state of trees in the Amazon Rainforest. (Photo: Flickr/Ricardo Funari)