Victoria Gill joins a team of scientists as they set up remote cameras to observe penguin colonies in the Antarctic.

Explorer Henry Worsley dies after suffering exhaustion and dehydration during a solo attempt to cross Antarctica.

The Zika virus is likely to spread across nearly all of the Americas, the World Health Organization has warned.

The secretary bird kicks snakes to death with a strike that packs five times the bird's own weight in a fraction of a second, scientists say.