
Ancient ‘machine-gun’ damage discovered on walls of Pompeii
Recently uncovered damage to walls in Pompeii displays patterns that may have been made by an ancient “machine gun” called a polybolos
Taylor Mitchell Brown is a San Diego–based journalist covering anthropology and paleontology, with occasional forays into other disciplines. You can find him in Science, Science News, New Scientist, National Geographic, Scientific American and elsewhere. Read his latest musings on Bluesky @tmitchellbrown.bsky.social

Ancient ‘machine-gun’ damage discovered on walls of Pompeii
Recently uncovered damage to walls in Pompeii displays patterns that may have been made by an ancient “machine gun” called a polybolos

This may be the oldest ‘butthole’ imprint on Earth
Fossils show exceptionally rare evidence of a cloacal vent—the slit that most vertebrates use to excrete, have sex and lay egg—which could shed light on the evolution of the orifice

Axolotls wow scientists by regenerating this complex organ
Axolotls can completely rebuild their thymus, a key immune organ

This fossil is rewriting the story of how plants spread across the planet
An enigmatic group of fossil organisms has finally been identified—and is changing the story of how plants took root on land