A study presents more evidence that the world is in the midst of a sixth mass extinction.

A "Dumbo" octopus is photographed at a depth of 7,000m in the Indian Ocean's Java Trench.

Baby orangutans are learning new skills from their human surrogate parents.

With only two northern white rhinos left in the world - both female - extinction seems a certainty.

The critically endangered Eastern Pacific leatherback's future looks "dire," say conservationists.

A new batch of these ostentatiously coloured and popular arachnids is described in Australia.

Scientists find out more about the threats of plastic to thousands of fish, whales and other aquatic life.

Neanderthals were eating fish, mussels and seals at a site in present-day Portugal, according to a new study.

A tiny, 555-million-year-old seafloor creature reveals why our bodies are organised the way they are.

Across wild mammal species, females live over 18% longer than males because of genetics and environment.