PBS Nova explained how a small terrestrial bird was able to survive the devastating asteroid that caused a mass extinction event.

An outbreak of bird flu has been detected in a "small number" of grey seals on the north Norfolk coast. The Animal and Plant Health Agency (APHA) said wild birds in the area had also tested positive.

Avian influenza (bird flu) was found in a Monroe County flock. Here's what residents and bird owners need to know.