Human Prehistory and Galactic Discoveries

Researchers uncover cut marks on ancient bones in South America, suggesting human presence 21,000 years ago. NASA's Cassini probe provides new insights into Titan's hydrocarbon seas, while Japanese scientists develop technology to make robot faces 'smile' with living skin tissue, highlighting potential in cosmetics and medicine.

Scientists have discovered cut-marked fossil bones in Argentina, suggesting humans were in southern South America 21,000 years ago, much earlier than previously believed. The bones belonged to Neosclerocalyptus, an extinct armored plant-eating mammal from the glyptodont group.

New data from NASA's Cassini spacecraft, which explored Saturn until 2017, is giving fresh insights into Titan's hydrocarbon seas. Cassini's radar observations are revealing more about Titan, Saturn's intriguing moon, which holds interest for the search for extraterrestrial life.

In a groundbreaking development, Japanese researchers have created a way to make robotic faces 'smile' using living skin tissue. At the University of Tokyo, scientists grew human skin cells in the shape of a face, achieving lifelike expressions. This innovation promises advances in the fields of cosmetics and medicine.

(With inputs from agencies.)