British and German scientists believe they have identified the specific area of the human brain responsible for intelligence.
US researchers say reptile populations are in crisis around the world.
The discovery of a 16,000-year-old "map of the night sky" could radically alter our ideas about prehistoric man.
Himalayan songbirds show how one species can evolve into two.
A team of scientists unveil the remains of an ape-man said to be six million years old - twice the age of the oldest known so far.
A study of African elephants reveals that dominant females build up a social memory as they get older, helping the herd to survive.
Long-term relationships are fundamentally dishonest. And it's all womens' fault, new research suggests.
The ancient Mayans may have had good reason for their fascination with the heavens.
The oldest known hominid fossils yet found in southern Africa are uncovered at the world-famous Sterkfontein Caves.
Millions of electronic messages from over the past 20 years have been saved from digital oblivion.