As Mars’s atmosphere thinned and its surface became cold, dry and irradiated billions of years ago, any surviving microbial life may have found its last refuge underground. Yet the environments most capable of sheltering life could lie metres—or kilometre

The ‘Exotic Physics’ Behind a Mysterious 1,000-Mile Cloud on Mars

4 news sources are covering this Science story right now — PULSE is tracking how fast it spreads.

SpaceX launches Starlink satellites from California as Falcon 9 cadence slows (photos)

Ice sheet expansion may have started 2,000 years ago, but we canceled that

Ancient DNA shows Ice Age Europeans stayed connected across long distances

Ancient DNA extracted from a French cave indicates that Ice Age Europeans maintained long-distance connections.

63 Years Ago This Week, Félicette Became the First Cat in Space

Coverage marks the 63rd anniversary of Félicette, a stray Parisian cat who became the first feline in space.

Paleolithic human DNA reveals east-west connections across Ice Age Europe

5 news sources are covering this Science story right now — PULSE is tracking how fast it spreads.