Carolyn Johnson

Dust from the Chicxulub impact would have lingered in the atmosphere for 15 years, cooling Earth by 27 degrees and shutting down photosynthesis for two years.

The moon is even older than scientists realized, according to new studies of crystals brought back from the moon by Apollo astronauts in 1972.

A trove of new scientific studies paints the most detailed picture yet of the human brain.

Dozens of fossilized human footprints in New Mexico have reignited a long-running debate about when people first arrived in the Americas.

The Nobel Prize in medicine was awarded to Katalin Kariko and Drew Weissman. Their breakthrough in 2005 is the backbone of two leading coronavirus vaccines.

Evidence is mounting that LK-99 is not a room-temperature superconductor. But some scientists still wonder if the material has other interesting properties.

The animal is a previously unknown species that may help researchers unlock secrets of surviving harsh environments.

Crushing and blasting rocks in the lab helps scientists re-create the high pressure, scorching hot conditions of unreachably deep portions of planets.

Regulators approved an RSV antibody treatment for infants that provides vaccine-like protection over the course of a single winter respiratory virus season.

Research using CRISPR gene editing revealed that scientists from more than a century ago were right: Extra chromosomes inside cancer cells help drive tumors.