Chicken or rooster? This bird is both – female on the left (dark feathers), and male on the right (white feathers, with larger comb and physique).
Mike Clinton (Roslin Institute)
Birds have some of the most amazing sex differences of any animal. They can control the sex of offspring, and even produce rare half-male, half-females. And their sex genes and chromosomes are quite different from ours.
A man makes his mark in South Africa’s general elections on May 7, 2014.
Concern at the role of fake sites in influencing South African public opinion has been growing over time.
Little boy blue.
noBorders - Brayden Howie
What we thought we knew about male development since the 1950s has now been turned on its head.
The Earth’s magnetosphere bangs like a drum.
E. Masongsong/UCLA, M. Archer/QMUL, H. Hietala/UTU
The Earth's magnetic field has a beat, scientists discover.
There’s a high degree of overlap between experiencing happiness and meaning.
Don't pursue happiness as a goal, instead make sure what you do from day to day provides a sense of meaning in life.
More than 620 million years of evolution separate crows from humans, but the birds show that they can plan three steps ahead.
New Caledonian crows are famous for using tools to reach a reward. Now scientists have confirmed they can plan several steps ahead, like a chess player contemplating a series of moves.
When you share your genetic data – even with the NHS – you don't know where it will end up, or how it will be used.
Revolutionary technologies like CRISPR are founded on discoveries uncovered through basic research that attracts very little attention.
United Soybean Board/flickr
On average, important new lab techniques like CRISPR take 23 years to develop – but there is a public expectation that scientific breakthroughs occur quickly and efficiently.
The first systematic study of the ballistics and accuracy of prehistoric spears suggests Neanderthals could kill at a distance.