Pac-Man-shaped blobs become world's first self-replicating biological robots

David Attenborough’s Unending Mission to Save Our Planet

With more than 700 marsquakes detected so far, scientists have a clearer picture of the interior structure of Mars than ever before. That picture shows Mars has a liquid metal core, a thick mantle with a rocky layer above a more fluid layer, and a crust that is proportionally thicker than Earth’s.

The best books of 2021 - New Scientist’s Christmas gift guide