A big difference between humans and other apes is the ability to stride easily on two feet. A new analysis of fossil bones shows that adaptations for bipedal walking go back 7 million years.

Pea-size clusters of human cells called brain organoids inspire both hope and fear. Experts are debating how scientists can responsibly use these bits of gray matter.

The final episode of fifth season of the Netflix series Stranger Things is out this week, and the concept of a wormhole figures largely into it. While the show is a work of fiction, theoretical wormholes have making appearances for decades not only in science fiction but in actual science.

A bumpy snailfish, Andean mouse opossum and ancient sea cow were just some of the many species described in 2025.

Triumphs included advances in transplanting animal organs into people, but the growing measles crisis in the U.S. indicates danger.

Snow isn't always white; algae can make it look green, red, or orange, and scientists are trying to understand how and why these colorful patches appear.

Researchers studying the human brain shared a lot of fascinating research this year, like how to keep brains young and how to reduce inflammation in joints.

Drugs like Adderall and Ritalin appear to help children with ADHD by activating brain areas involved in alertness and motivation.

Cuts to scientific research focused disproportionately on research around diversity equity and inclusion. Some researchers say we're just beginning to understand the impact.

Household waste increases by 25% between Thanksgiving and New Years. Rules vary by municipality on what you can recycle and what needs to go into the trash.