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U.S. Aims to Give Cold War Plutonium to Start-Ups for Nuclear Fuel

U.S. agencies aren’t ready for the rising cost of making research papers free, report warns

Screen time limits can protect children’s health, U.S. surgeon general advisory says

U.S. researchers face new restrictions on publishing with foreign collaborators

The U.S. just experienced its hottest 12 months on record

Ebola outbreak triggers U.S. ban on travelers from three African nations

16 More People in the U.S. Are Being Monitored for Hantavirus, C.D.C. Says

In unreleased document, fired U.S. science board issues stark warning about keeping pace with China

Why Are So Many New Fathers Dying? Scientists Say the U.S. Has a Dangerous Blind Spot

Is the U.S. in a new era of political violence? Experts say it’s complicated

Virologist accused of starting COVID-19 will fight U.S. ban on funding

Chinese postdocs in U.S. hit with a wave of prosecutions and deportations

U.F.O. Files Released by U.S. Shed Light on What the Government Knows

Hantavirus Response Shows How Trump Cuts Have Compromised U.S. Preparedness

Gas prices are spiking. So why aren’t U.S. oil companies drilling more?

Key U.S. science panels are being axed—and others are becoming less open

A third of U.S. adults don’t get enough sleep, new CDC report warns

Pushed by Trump policies, top U.S. battery scientist is moving to Singapore

Deep-Earth map reveals a lost U.S. continent

Trump, ibogaine and the science behind the psychedelics boom in the U.S.