From raw eggs to protein shakes, those hoping to expand their brawn are often encouraged to ingest vast quantities of protein. But how much is really necessary?

What happens when we make friends across borders? Two writers talk about their British-Italian friendship – and the fascinating cognitive science on such cross-cultural bonds.

From the mysterious white flecks that sometimes appear on nails to unusual ridging or changes in thickness, what do these features really mean?

Suggesting that natural products or ingredients are inherently superior to those that are synthetic is a common flaw in reasoning used by brands and politicians alike.

Scientists and industry are finding unusual new uses for brewers' spent grain – the beer industry's largest waste product.

Scientists have cracked the perfect way to boil an egg – astonishingly, it takes half an hour.