New research has linked levels of vitamin D in midlife with toxic tangles of tau protein that accumulate in the brains of those with Alzheimer’s disease.
A statistical analysis of blood samples and brain scans from 793 adults showed that the…

New research has linked levels of vitamin D in midlife with toxic tangles of tau protein that accumulate in the brains of those with Alzheimer’s disease.
A statistical analysis of blood samples and brain scans from 793 adults showed that the…

April 10, 2026
3 min read
Add Us On GoogleAdd SciAm
Why bombing Iran’s nuclear power plant could cause an environmental disaster
Strikes to Iran’s Bushehr nuclear power plant could release long-lasting radioactive cesium 137 into the Persian Gulf,…

In 2034 NASA scientists will be flying around Titan.
Remotely, of course—Titan, Saturn’s largest moon, is more than a billion kilometers away from Earth, a journey no human can yet make. It’s also deathly cold, being so far from the sun. But…

Watch On
Today, April 10, NASA’s Artemis 2 astronauts are set to return to Earth from the moon, bringing their historic 10-day mission to a close.

When you get up out of a chair, your blood pressure instantly increases to compensate for the movement and keep you from fainting. For decades researchers thought neurons called baroreceptors in arteries controlled this process by signaling the…

A bit more darkness, then, is welcome. Still, Hewton says, sleeping outside can take some getting used to. “The first couple of nights of camping, you’re a bit more conscious of unusual noises that you wouldn’t have at home,” she says. “I…

Kendra Pierre-Louis: For Scientific American’s Science Quickly, I’m Kendra Pierre-Louis, in for Rachel Feltman.
Most of us know the story of Moby-Dick, the 1851 novel by Herman Melville that dots many a high school required-reading list. That…

After an epic trip to the moon and back, it’s landing day for the four astronauts of NASA’s Artemis 2 mission. For the first time in over 53 years, astronauts are returning to Earth from the moon.

Between 280 and 200 million years ago, a group of animals evolved which would eventually give rise to mammals, including humans: the therapsids. They were first described more than 150 years ago, based on fossils from South Africa. Since…