Solitary lifestyles can have some big advantages in the animal world. Can humans learn anything from them?

Some species of birds like geese save energy by flying in close formation. Airliners could use a similar trick to burn less fuel.

The world's largest invertebrate remained hidden from humanity until a tantalising glimpse 100 years ago. But it would be decades before we come face to face with the colossal squid.

The breeds show different reaction to clocks going back and forward, a study suggests.

It can be difficult to find motivation to keep fit when it's cold and dark outside. Here are some expert tips on how to stay active during the winter months.

Some species of caterpillar come armed with powerful venoms. Harnessing them could help us design new drugs.

Filming the BBC's landmark series Asia took its crew on a four-year-long odyssey from the open ocean to the "roof of the world".

Grief has long thought to be a human trait, but other animals – from killer whales to crows – also appear to suffer loss when a companion dies.