Science Magazine – November 30, 2023: The new issue cover features a chinstrap penguin (Pygoscelis antarcticus) cares for a chick while its partner catches a quick nap.

Oldest forts challenge views of hunter-gatherers

8000 years ago—long before farming arrived—people in Siberia built defensive structures

DeepMind predicts millions of new materials

AI-powered discovery could lead to revolutions in electronics, batteries, and solar cells

Penguins snatch seconds-long microsleeps

Chinstrap penguins fall asleep thousands of times per day in the wild