All facts — Page 19
The complete ONAURE library, newest first. Every fact has an explanation and a source you can check.
2056 facts
The human eye can distinguish about ten million colors.
The cones in the retina process different wavelengths of light, allowing us to perceive a vast range of shades, far…
Albert Einstein was offered the presidency of Israel.
In 1952, the Israeli government invited the physicist to assume the country's presidency, but he politely declined…
The Sun loses millions of tons of mass every second.
Through nuclear fusion and solar wind, our star constantly converts and ejects matter into space, although this loss…
A snail can sleep for three years straight.
If weather conditions are too dry or cold for their survival, snails enter a state of deep dormancy to conserve…
A pineapple takes over two years to grow.
Unlike other fruits that yield annual harvests, the pineapple plant requires a long growth and maturation cycle…
Istanbul is the only city in the world located on two continents.
Divided by the Bosphorus Strait, the Turkish metropolis has a part in Europe and another in Asia, uniting two…
The first person killed by a robot was in 1979.
Robert Williams, a Ford factory worker, was struck by a one-ton robotic arm in a Michigan plant, becoming the first…
The world's oldest living tree is almost five thousand years old.
Known as Methuselah, this bristlecone pine in California started growing before the Egyptian pyramids were built and…
Water expands by about nine percent when it freezes.
This anomaly makes ice less dense than liquid water, allowing it to float and insulate lakes and oceans, protecting…
The Apollo 11 computer was less powerful than a modern calculator.
The AGC had only a few kilobytes of memory and a tiny processing speed, but it was enough to take humans to the Moon…
In seahorses, the male gives birth to the young.
The female deposits the eggs into a brood pouch on the male's abdomen, where they are fertilized and develop until…
Lesotho is the only country in the world entirely above one thousand meters.
This small independent state in Southern Africa has the lowest high point of any country in the world, having no land…
The first photograph in history took eight hours to take.
In 1826, Joseph Nicéphore Niépce used a camera obscura and a pewter plate coated with bitumen, requiring a prolonged…
The platypus has no stomach.
It lost its stomach millions of years ago. The oesophagus connects directly to the intestines, which is rare among…
Human stomach acid is strong enough to dissolve razor blades.
The pH of gastric acid is very low, allowing it to corrode metals like zinc and even certain blades, though it should…
The cashew grows hanging from the base of a false fruit called the cashew apple.
The true fruit is the nut, which develops outside the fleshy stalk to prevent the seed from being digested by animals.
A pineapple takes about two years to grow until it is ready to be harvested.
The plant grows slowly and produces only a single fruit per cycle, requiring patience and specific climatic…
Peanuts are one of the ingredients used in the manufacture of dynamite.
Peanut oil can be processed to produce glycerol, which in turn is converted into nitroglycerin, the explosive…
The surface area of Russia is larger than the total area of the dwarf planet Pluto.
Russia has about seventeen million square kilometres, while Pluto has less than eighteen million.
The longest mountain range in the world is found at the bottom of the ocean.
The Mid-Ocean Ridge is over sixty-five thousand kilometres long and crosses all the major oceans.
Cleopatra lived in an era closer to the Moon landing than to the building of the Great Pyramid.
The Great Pyramid was built around twenty-five hundred BC, Cleopatra lived near thirty BC, and the Moon was landed on…
Bananas are naturally radioactive.
They contain a small amount of potassium-forty, a natural radioactive isotope, although the dose is harmless to…
There is a lake in Canada that forms polka dot patterns in the summer.
Spotted Lake loses water through evaporation and leaves behind mineral deposits of sulphates and calcium that create…
Water can boil and freeze simultaneously under specific conditions.
At the so-called triple point, the exact temperature and pressure allow water to exist in all three physical states…