a picture that doesn’t actually have any real curved lines

A 1,000-year-old Viking battle axe, before and after restoration.

The wonders of hydrostatics

In a resting fluid, there is always a pressure force called hydrostatic pressure. The fluid exerts a force on the bottom and walls of the vessel.

In this case, the water squeezed out the carbon dioxide and filled the empty space. This equalized the pressure in the bottle and the pool, so the cola didn't leak out.

This ancient swedish herdingcall called Kulning is straight up mesmerizing.

Time-lapse of Allied Armies landing at Normandy and the 87 days that followed

People massacred by Soviet NKVD on 8 July 1941 in Tartu, Estonia, 192 people were killed

Ectopia of the heart is a congenital
disease characterized by an abnormal position of the heart — outside the chest: most often in a split of the chest, less often in the abdominal cavity or neck.

Those born with ectopic hearts usually die in the first year of life.

How they make ripped jeans :o

A buffalo flipping over a tortoise

Giant magnifying lens demonstration.

The teeth of a victim of the Vesuvius eruption that destroyed Pompeii 2000 years ago: they were in perfect condition in life, due to a combination of dietary and environmental factors, and remain so to this day