All facts — Page 23
The complete ONAURE library, newest first. Every fact has an explanation and a source you can check.
1196 facts
The gallbladder can be removed without serious consequences.
The gallbladder stores bile produced by the liver, but it can be surgically removed. After removal, the liver…
Hawaii is the southernmost state in the United States.
Hawaii is the southernmost state in the United States. It stretches for 2,400 kilometres in the Pacific and is the…
The terracotta army was built to protect the tomb of the first emperor of China.
The terracotta army was built to protect the tomb of Qin Shi Huang, the first emperor of China, who died in 210 BC…
Roman concrete is more durable than modern concrete.
Roman concrete, made with volcanic ash, withstands time better than modern concrete. Buildings such as the Pantheon…
A saguaro cactus can live more than 150 years and grow 12 metres tall.
The saguaro, native to the Sonora Desert, is the tallest cactus in the United States. It grows very slowly, reaching…
Liquid oxygen has a pale blue colour.
Unlike oxygen gas, which is colourless, oxygen in the liquid state is pale blue. This colour is due to the absorption…
Olympus Mons on Mars is the largest known volcano in the solar system, about 22 kilometres high.
Olympus Mons is about 22 kilometres high, almost three times the height of Mount Everest, with a base hundreds of…
Wikipedia exists in more than 300 languages.
Wikipedia exists in more than 300 languages and, in 2024, surpassed 60 million articles across all versions. It is…
The pangolin is the only mammal covered in scales.
The pangolin is the only known mammal with true scales. The scales are made of keratin, the same material as human…
The jellyfish has no brain, heart or bones.
Jellyfish are simple animals, made up of about 95 percent water. They have no brain, heart, bones or true eyes. Their…
The octopus can taste with its arms.
The octopus has taste receptors on the suckers of its arms. This allows it to identify whether an object is edible…
Cows have nearly 360-degree vision.
Cows have eyes on the sides of their heads, giving them almost 360-degree vision. This helps them detect predators…
Humans have a vestigial bone called the tailbone.
The tailbone, or coccyx, is the vestige of a tail that our ancestors had. Although it no longer serves that purpose…
Dark chocolate has more antioxidants than milk chocolate.
Dark chocolate, with a higher percentage of cocoa, has far more antioxidants than milk chocolate, because milk…
Olives are naturally bitter and need curing to be edible.
Raw olives contain oleuropein, an extremely bitter compound. That is why they must be cured in brine, water or…
Ancient Roman concrete had a self-healing ability.
Roman concrete contained lumps of lime that, on contact with water, dissolved and recrystallised, filling cracks…
The sailfish is the fastest fish in the ocean, reaching 110 kilometres per hour.
The sailfish can reach speeds of up to 110 kilometres per hour, making it the fastest fish in the ocean. Its speed is…
The Arctic tern migrates from the North Pole to the South Pole every year.
The Arctic tern migrates from the North Pole to the South Pole every year, a journey of about 70,000 kilometres. It…
The bar-tailed godwit can fly more than 11,000 kilometres without stopping.
The bar-tailed godwit (Limosa lapponica) is capable of flying more than 11,000 kilometres without stopping, from…
The boxer crab uses sea anemones as boxing gloves.
The boxer crab (Lybia tessellata) carries sea anemones in its claws and uses them as boxing gloves to defend itself…
The human body contains enough phosphorus to make about 2,200 match heads.
The adult human body contains about 780 grams of phosphorus, most of it in bones and teeth. This amount would be…
The human body contains enough potassium to fire a toy cannon.
The adult human body contains about 140 grams of potassium, essential for muscle and nerve function. This amount…
The human body contains enough sulfur to kill all the fleas on a dog.
The adult human body contains about 140 grams of sulfur, present in amino acids such as cysteine and methionine. This…
There is a reflex that makes you sneeze when you look at the sun.
The photic sneeze reflex affects about 18 to 35 percent of people. When sunlight suddenly enters the eyes, the optic…
