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Scientific American is the essential guide to the most awe-inspiring advances in science and technology, explaining how they change our understanding of the world and shape our lives.
Updated: 13 hours 20 min ago

Spectacular images reveal never-before-seen whirlpools on the sun

Wed, 08/05/2026 - 11:00am

Strange whirlpools of plasma seen in the sharpest images ever captured of our star help explain the deep origins of Earth-threatening space weather and more

Categories: Astronomy

How living near mountain lions might actually make you safer

Wed, 08/05/2026 - 11:00am

Mountain lions (also known as cougars or pumas) make roads safer by scaring deer and elk that can cause collisions with cars into more remote areas

Categories: Astronomy

Mathematicians make a breakthrough on Gauss’s riddle, unsolved for 200 years

Wed, 08/05/2026 - 6:30am

A solution to part of the Cohen-Lenstra conjecture helps resolve a long-standing mystery about quadratic forms

Categories: Astronomy

Psilocybin could kick-start anorexia recovery, early results suggest

Wed, 08/05/2026 - 6:00am

An active ingredient in magic mushrooms, psilocybin has shown early promise for treating eating disorders

Categories: Astronomy

YouTube star Simone Giertz has some life and science lessons to share with you

Wed, 08/05/2026 - 6:00am

The Swedish engineer influencer has spent over a decade on YouTube growing a loyal audience of over 2.5 million followers, but for her, the journey was all about living a less typical life in science.

Categories: Astronomy

La Brea Tar Pits disgorge rare ice age toad

Wed, 08/05/2026 - 3:00am

This marks only the second extinct ice age amphibian found in North America—and it gives researchers vital information about the ancient climate

Categories: Astronomy

Wormholes could be the key to time travel

Tue, 08/04/2026 - 2:00pm

Wormholes are one way that physicists have imagined traveling into the past. But if something gets there, is it physically possible to change anything?

Categories: Astronomy

Newly discovered carnivorous plant is as deceptive as it is deadly

Tue, 08/04/2026 - 12:26pm

Charles Darwin predicted in 1875 that some members of the Saxifraga genus could be carnivorous—now scientists have finally proven him right

Categories: Astronomy

Project backed by Leonardo DiCaprio and Jeff Bezos aims to save 100 critically endangered species

Tue, 08/04/2026 - 11:00am

This billionaire-backed fund is dedicating $200 million to preserve animals and even plants that are facing extinction around the world

Categories: Astronomy

A SpaceX rocket is about to hit the moon—these videos show what could happen

Tue, 08/04/2026 - 9:00am

Astronomers’ simulations predict what this lunar impact—and its aftermath—will look like

Categories: Astronomy

An Ichthyosaur’s terrible, horrible, no good, very bad day 160 million years ago

Tue, 08/04/2026 - 6:30am

A rare fossil find shows a tooth embedded an ichthyosaur’s vertebra, where it was likely left when a giant pliosaurid chomped down on this dolphin-resembling reptile

Categories: Astronomy

The U.S. military needs tungsten, but pristine NASA site may stand in the way

Mon, 08/03/2026 - 4:00pm

A unique landform is vital for calibrating NASA’s satellites, but it’s likely sitting atop a vast deposit of this heavy metal, which is crucial for making munitions

Categories: Astronomy

It’s 90 degrees in the Arctic right now

Mon, 08/03/2026 - 2:04pm

The Arctic is heating faster than the rest of the planet. New data illustrate how dire that is

Categories: Astronomy

Washington’s wildfires are a warning for the entire U.S.

Mon, 08/03/2026 - 2:00pm

Dry conditions and climate change are putting forests across the country at risk for disaster

Categories: Astronomy

Cyclospora outbreak tied to two deaths as parasite-borne illness continues to rage

Mon, 08/03/2026 - 12:15pm

These deaths were reported by Michigan, which has seen more than 11,000 cases of cyclosporiasis emerge since late June

Categories: Astronomy

Senate funding resolution seeks to put OMB rule changes to research grants on hold

Mon, 08/03/2026 - 11:30am

These proposed changes have seen significant bipartisan pushback and have been criticized by scientists across disciplines

Categories: Astronomy

How Antarctica’s Blood Falls came to be

Mon, 08/03/2026 - 11:00am

The bright, red-orange stain on Antarctica’s ice-covered landscape may trace back to ancient oceans

Categories: Astronomy

Daddy long legs perform fellatio—and other wild facts about how these arachnids mate

Mon, 08/03/2026 - 6:30am

Some female daddy longlegs will perform fellatio, perhaps to avoid potential violence from males, while males of another species entice females with a secretion on their penises

Categories: Astronomy

Cyclosporiasis cases surge while new research questions ‘protein maxxing’

Mon, 08/03/2026 - 6:00am

An outbreak of Cyclospora infections tied to produce spreads across multiple states as new research challenges the protein maxxing craze

Categories: Astronomy

Postpartum psychosis is at the center of the Lindsay Clancy trial. What is it?

Fri, 07/31/2026 - 12:11pm

A high-profile court case is calling attention to this rare and understudied condition

Categories: Astronomy