Puffy face, chicken legs, and blurry vision: How Sunita Williams will adapt to Earth's environment
Nasa astronauts Butch Wilmore and Sunita Williams returned to Earth after an extended nine-month stay in space, experiencing ...
Chickens sprouted dino-like feathers when scientists messed with the Sonic Hedgehog gene
Scientists uncovered a key genetic pathway in the origin of feathers, but they found that evolution is stubborn in turning ...