Archaeologists have analyzed 2,900-year-old stone carvings and a long-ignored chisel from the Iberian Peninsula, revealing that local craftspeople produced steel long before previously thought.
Scientists who have thrown a single atom from one pair of optical tweezers to another say that the feat could be used to build better quantum computers.
The rays appear when sunlight shines through gaps in the cloud during sunrise or sunset and have never been seen this clearly on the Red Planet before.
An elderly lion in an Indiana zoo transmitted COVID-19 to the zookeepers who handfed the severely ill big cat. It is the first recorded time a zoo animal has passed the virus to a human.