The gradient illusion that has stumped the internet: Square appears to change colour as it moves - but there is a simple scientific explanation why

Chilean navy divers free huge killer whale trapped in a fishing net 2000 miles out to sea in the South Atlantic

Full video

Jacob Credell was working the southbound A train at 5am on Saturday morning when he was attacked by a man and a woman at a station in Brooklyn, New York City.

a car crosses to the wrong side of the road and smashed into couple, flipping their car and leaving them hospitalised

Six stone bulldog leaves his owner's best friend with WHIPLASH after yanking him off his feet while going for a walk in hilarious video

Armed robber attacked a shop keeper at a store in Wollaton, Nottingham. The shopkeeper fought off the 39-year-old while he swings the gun at him multiple times.

Powerful storm 'plume' that created hailstones the size of BASEBALLS over North Dakota is captured in mesmerizing NASA footage shot from space

Security cameras show bus driver stopping to comfort a two-year-old girl who was roaming the street alone in just a t-shirt and underwear

Give us a kiss! Angry goose knocks inquisitive toddler to the ground

Motorcycle madness! Daredevil driver lies on his bike while speeding down a road in incredible video

Heart-stopping moment father climbs out of a seven-floor window without harness to save his young son who is stuck on the side of the building in China

The test that PROVES why girls can't catch: Men have better reactions and pick up on visual motion faster than women, study reveals - so how well would you do?

Bizarre moment a furious man repeatedly kicks a truck in a western Sydney 'road rage attack' as a woman pleads with him to stop

Bodycam Footage Shows Police Shootout in Los Angeles, California (cam 1)

Bodycam Footage Shows Police Shootout in Los Angeles, California (cam 2)

Bodycam Footage Shows Police Shootout in Los Angeles, California (cam 3)

New Haven emergency teams respond to nearly 80 overdose cases in park near Yale. Police say laced synthetic marijuana could be the culprit.