America's AI boom requires a lot of power. NPR's Scott Detrow speaks with Wall Street Journal reporter Jennifer Hiller about the workers who are building the electric grid one transformer at a time.

The president says his veto of a Colorado infrastructure project is about "fiscal sanity." Some say the president is retaliating against the state for political reasons.

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.

Research overwhelmingly shows that connections we make through computers are not the same as those that happen offline.

Farmers conventionally rely on pesticides to protect their crops. But bats are a more eco-friendly solution.

Misinformation after disasters is growing in part because AI-powered software makes it easier to create and spread lies on social media.

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.

Volunteers in Minnesota are collecting pine needles to help researchers determine how PFAS -- the substances commonly called forever chemicals -- find their way into water, soil and air.

Car crashes with wildlife kill about 200 Americans every year.

As 2025 winds down, we've been looking at the year's most important stories in areas ranging from politics to art and culture to science.