Louise Gentle works for Nottingham Trent University. A belly button or tummy button is technically known as a navel or umbilicus. Humans have belly buttons because before we are born, we are connected ...

Nature has created some incredible partnerships between animals and bacteria. These tiny organisms live inside their hosts, ...

This series of incredible X-ray pictures shows an alligator being slowly digested inside a python. The photos reveal the process going on inside the snake over the course of several days. The snaps ...

Ocean acidification impairs digestion in marine organisms, according to a new study. Researchers have studied the larval stage of green sea urchins Strongylocentrotus droebachiensis. The results show ...