The new guidance would do away with a decades-old universal birth dose recommendation for hepatitis B that helped cut ...

It was thought that complex cells couldn’t survive above a certain temperature, but a tiny amoeba has proven that assumption ...

In some parts of the world, record numbers of people are being diagnosed with attention deficit hyperactivity disorder (ADHD) ...

Today’s leading AI models can already write and refine their own software. The question is whether that self-improvement can ...

Flex your math muscles with this weekend’s brain teaser. Play now.

An estimated 280 million metric tons of plastic waste will enter the air, water, soil, and human bodies every year by 2040, ...

A scientist has identified a possible astronomical explanation for the Star of Bethlehem, as described in the Bible ...

Hole in the Sky, by Daniel H. Wilson, is one of Scientific American’s best fiction picks of 2025. In the novel, aliens talk ...

RFK Jr’s vaccine advisory panel will be discussing the inclusion of adjuvants in childhood vaccinations today. Here’s what’s ...

A partially successful test of China’s Zhuque-3 rocket shows that other countries are rapidly catching up with the U.S in the ...

It’s always amazing, and more than a little humbling, when the universe reminds us that our “common sense” is provincial, ...

Members of the CDC’s Advisory Committee on Immunization Practices seemed confused on a proposed recommendation for the ...