The Race for Texas’s Powerful Energy Regulator Is Heating Up

Exercise Is Powerful Medicine for Depression

Powerful storm rolls across central US, unleashing at least 19 tornadoes

The most powerful space telescope ever built will look back in time to the dark ages of the universe

Powerful storm brings heavy rain, flooding and mud flows to Northern California

Powerful quake adds to Haiti’s misery, killing at least 304

A.I. is getting more powerful, faster, and cheaper—and that’s starting to freak executives out