Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient world slept only 6.5 hours a night.

using their wings as flippers to navigate underwater. Penguins primarily feed on krill, fish, and squid. The Emperor Penguin is the largest species, known for its remarkable breeding cycle during the ...

Epaulette sharks have adapted to move out of water briefly by using their fins to “walk” along the seabed. Found primarily in the shallow waters of Australia and New Guinea, these small sharks can ...