Can We Cool the Planet?

As global temperatures rise, scientists are exploring solutions from planting trees to sucking carbon out of the air to geoengineering. But would they work? And what are the risks of engineering Earth's climate?

This visualization uses Washington D.C.'s National Mall to show the scale of human coal consumption—and how much CO2 it adds to our atmosphere.

Scientists propose putting reflective aerosols into the stratosphere to reflect the sun's rays. But will this have unintended consequences?

Using laser technology aboard the International Space Station, Lola Fatoyinbo can get a 3D measure of forest carbon—making it the first near-global dataset.