A New Orleans couple doing yard work behind their house unexpectedly found a Roman headstone of a solider who died 1,900 years ago.

Researchers used a new technique called algorithmic fault tolerance (AFT) to cut the time and computational cost of quantum error correction by up to 100 times in simulations of neutral-atom architecture.

Comets Lemmon and SWAN will be at their brightest just as the annual Orionid meteor shower produced by Halley's Comet reaches its peak.

Greenhouse gas concentrations increased by a record amount in 2024 as more carbon dioxide, methane and nitrous oxide became locked in Earth's atmosphere, a World Meteorological Organization report finds.