May 21 (Reuters) - A new fossil of the Cretaceous Period dinosaur Psittacosaurus, a dog-sized herbivore with a parrot-like beak, that was donated to a Chinese university came with a surprise - one ...

The earliest feathered dinosaurs may have evolved their bird-like features while still retaining lizard-like scales on other parts of their body. This theory is based on the discovery of a fossilized ...

From color-changing skin to jet-propelled motion, squid and cuttlefish have long fascinated scientists. To understand the ...

(Special to The Root) — Skin color is one of our most important biological traits. Its many shades evolved as humans moved far and wide into regions with different intensities of sunlight. Skin color ...

Ancient DNA from 348 individuals who lived between 1,700 and 45,000 years ago is reshaping what we know about the evolution of skin color in Europe. A new study suggests that up until around 3,000 ...

A new shape-shifting material can change both its texture and color in seconds, inspired by the camouflage abilities of ...

Biology -- Skin's natural palette -- Original skin -- Out of the tropics -- Skin color in the modern world -- Shades of sex -- Skin color and health -- Society -- The discriminating primate -- ...

Octopuses cycle through a fascinating sleep state that appears quite similar to human REM, scientists say.