Once they near emergence, the female's thin skin bulges and pulsates with the struggles of the impatient froglets. The day ...

Similarities to the womb and placenta of female mammals indicate a response to common evolutionary challenges in pregnancy.

A spot of inter-species rivalry provided a dramatic scene for bystanders in the Florida Everglades recently, as an American crocodile faced off with an alligator. Footage provided to Storyful by Maria ...

"Two Uranus years (one Uranus year is 84.02 Earth years), running from 1900 to 2068 and starting just before southern summer solstice, when Uranus’s south pole points almost directly towards the Sun," ...