Scientists have finally solved the mystery behind this optical illusion

A pride of lions silently patrolling the grassland at dusk; a cheetah closing in on its prey with mind-blowing speed; a watchful leopard curled artfully in a tree. There’s nothing quite like a big cat

THE MOST DOMINANT FORCE IN THE UNIVERSE IS ALSO ITS MOST MYSTERIOUS AND MOST UNANTICIPATED

Were the seeds of Civil War already written into the American Constitution?

The land Down Under seems ready-made for soul-stirring adventures. Its 16,000 miles of coastline are one long playground, with vertiginous cliffs riddled with hiking trails and reefs ripe for diving. There’s ancient flora and unique wildlife hiding in the rainforests, and cities that offer every activity under the sun. So pick up your hiking boots, paddle or flippers and get outdoors

From dark matter to deep-sea crabs, science still can’t fully explain these strange quirks of nature

As we sat at a well-worn wooden kitchen table in the leafy Moseley suburb of Birmingham, Judith Yates pointed at a spreadsheet on her MacBook. Each row told a clear story, painstakingly collected by t