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By Katherine Rowland of Nature magazine In the Congo Basin, Bayaka pygmies patrol their forests with handheld tracking devices. [More]

Humans may have been causing climate change for much longer than we’ve been burning fossil fuels . In fact, the agrarian revolution may have started human-induced climate changes long before the industrial revolution began to sully the skies.

This chart shows the shift in the U.N. development index for Norway (top purple), the U.S. (second purple), Turkey (green) and the Democratic Republic of the Congo (red) from 1990 to 2011 If global development were a horse race, would you put your money on the slow-and-steady contenders or a fast new contender

New positive numbers about the world's rainforests provide lessons on how to prevent deforestation: protect, plant, and pay. Ethonomic Indicator of the Day: 25%--amount of decrease in rainforest deforestation The climate is becoming increasingly unpredictable and global greenhouse gas emissions are increasing, but take heart: the destruction of the world's largest rainforests (the Amazon, Congo, and Borneo Mekong) is actually down 25%, according to a new report from ForestCarbon Asia .