Geoff Brumfiel

A program initiated by the Trump administration has allowed small companies to rush their testing of several new nuclear reactor designs. Some worry that safety is being compromised.

MIT researchers think they've worked out exactly how Russia's Burevestnik nuclear-powered missile flies. "It's almost certainly a terrible idea," one analyst said. "But it's not an impossible idea."

The initial public offering from the rocket and AI company raised some $75 billion, making the company one of the biggest in the world — and likely making Elon Musk a trillionaire.

Tech millionaires claim China is behind a wave of local opposition to U.S. data centers, while providing little direct evidence.

One California town is in a state of emergency and 50,000 people are under an evacuation order as a malfunctioning chemical tank at an aerospace plant is overheating and could leak or explode.