Cutting-Edge Discoveries in Science: From Ancient Human Activity to Smiling Robots

Recent scientific findings have unearthed intriguing new information across various fields. Butchered fossil bones discovered in Argentina suggest humans were present in southern South America around 21,000 years ago, significantly earlier than previously believed. These bones belonged to Neosclerocalyptus, a large armored mammal that roamed the region until the end of the Ice Age.

Meanwhile, data from NASA's Cassini spacecraft, which explored Saturn and its icy moons, is offering fresh insights into the hydrocarbon seas on Titan, Saturn's largest moon. Cassini's radar observations reveal new details about these liquid seas, crucial to the search for extraterrestrial life.

In another advancement, Japanese scientists at the University of Tokyo have succeeded in making robotic faces 'smile' by attaching living skin tissue. This breakthrough, using human skin cells shaped into a face and manipulated to grin with ligament-like attachments, holds potential applications in both cosmetics and medicine.

(With inputs from agencies.)