One of President Trump’s first executive orders withdraws the U.S. from the Paris climate agreement. These graphics show why the pact is crucial to curbing the worst effects of global warming

Though largely symbolic, President Trump’s declaration of an “energy emergency” could throw a wrench in renewable energy development and will cut into the Endangered Species Act

Spreading crushed stone across farm fields could inexpensively pull CO₂ from the air while also increasing yields. But it would require a mountain of mining

DNA inherited from Neandertals may influence modern human cognition

The best view yet of the Cassiopeia A supernova remnant reveals new secrets