Scientific American.com

3D models of Australopithecus afarensis hint at the muscular adaptations that made modern humans better runners

The moon may have melted 4.35 billion years ago—explaining a lunar age mystery

As the bird flu virus moved into cows and people, sluggish federal action, deference to industry and neglect for worker safety put the country at risk

Early cultural exposure can influence kids’ ideas about gender and STEM in significant ways

Learn which molecules are responsible for giving Christmas trees their distinct, crisp-yet-spicy scent

The winter solstice is the culmination of a period every year when each cell in our body literally craves more light

The centennial of the discovery of brain waves in humans exposes a chilling tale involving Nazis, war between Russia and Ukraine, suicide and the vicissitudes of history

With billions of stars in the Milky Way, some nomenclature standardization is necessary

There are so many species facing extinction—but today we’re telling stories about the animals making a comeback and the conservationists working hard to help.

Unless we pursue AI carefully, the Nobel committee will one day give a Peace Prize to the people cleaning up its terrible consequences, just as it did with nuclear physics

I am a trauma surgeon and gunshot survivor who has experienced byzantine health insurance coverage firsthand. I understand why people are furious

President Biden strengthened the U.S.’s commitment to slash climate pollution under the Paris Agreement knowing that President-elect Donald Trump could abandon it, but states and cities could still use it as a guide

With a possible bird flu outbreak looming, Donald Trump’s choice of Jay Bhattacharya, a scientist critical of COVID policies, for the NIH is the wrong move for science and public health

In 2017, a group of students at Dartmouth College filed a lawsuit that revealed an entrenched culture of power and abuse, and in doing so, they sparked a wider conversation about sexual violence in science.

The huge Stegosaurus fossil Apex, bought at auction for $44.6 million, has debuted on loan at the American Museum of Natural History

Material from asteroid Ryugu riddled with earthly microbes provides a cautionary tale for scientists seeking signs of alien life

The proof that the Apéry constant is irrational remains one of the most bizarre events in the history of mathematics

Think Twice before Giving Direct-to-Consumer Genetic Testing Kits to Friends and Loved Ones

See the year’s most striking images from the Hubble and James Webb space telescopes, NASA’s Mars rover and the best sky watching on offer

Louisiana reported a person hospitalized with a severe case of H5N1, and the USDA has begun bulk milk testing