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1,964 facts in Science. Click any fact to see its full page.
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The longest word without a repeating letter is 'uncopyrightable.'
Petrified wood forms when minerals gradually replace organic material over millions of years, turning wood into stone.
A lightning bolt can reach temperatures of 54,000 degrees Fahrenheit — five times hotter than the surface of the Sun.
Earthquakes can permanently shorten the length of a day by shifting the Earth's mass distribution.
Ball lightning is a rare atmospheric phenomenon that appears as glowing, spherical objects during thunderstorms and remains unexplained by science.
Blue light from screens suppresses melatonin production, which can interfere with sleep quality.
Humans are genetically programmed to like sweet and salty foods because they signal the presence of carbohydrates and essential minerals.
Grapes will explode if you microwave them, producing a brief plasma arc.
The smallest unit of matter that retains the properties of an element is an atom.
Polar ice cores contain trapped air bubbles that allow scientists to analyze the atmosphere from hundreds of thousands of years ago.
Rubber bands last longer when refrigerated because cold temperatures slow down the degradation of the rubber polymer chains.
Supercooled water can remain liquid below freezing until disturbed, at which point it instantly crystallizes into ice.
Carbon-14 dating can determine the age of organic material up to about 50,000 years old.
The element mercury is the only metal that is liquid at room temperature.
When water freezes, it releases heat — this is why farmers spray crops with water before a frost.
There are more atoms in a glass of water than there are glasses of water in all the oceans on Earth.
Aerogel is a synthetic material that is 99.8% air and can support 4,000 times its own weight.
The boiling point of water decreases with altitude — at the top of Mount Everest, water boils at about 160 degrees Fahrenheit.
Perpetual motion machines are impossible because they would violate the laws of thermodynamics.
A single cup of soil contains more microorganisms than there are people on Earth.
The Mpemba effect is the observation that hot water can sometimes freeze faster than cold water under certain conditions.
Penicillin was discovered by accident when Alexander Fleming noticed mold killing bacteria on a petri dish he had left out.
Static electricity can reach voltages of 25,000 volts, but the current is so low it is not dangerous.
The metal gallium has such a low melting point that it will melt in your hand at 85.6 degrees Fahrenheit.
If you folded a piece of paper 42 times, it would reach the Moon.
Dry ice does not melt — it sublimates, going directly from a solid to a gas.
A single human hair can hold about 3.5 ounces of weight.
The Earth rotates at about 1,000 miles per hour at the equator, but you do not feel it because everything around you moves at the same speed.
Honey is a supersaturated sugar solution and a natural preservative — bacteria cannot grow in it.
Hiccups serve no known useful purpose and may be a vestigial reflex from our amphibian ancestors.
Identical twins do not have identical fingerprints because fingerprint patterns are influenced by random conditions in the womb.
The bacteria living in your gut outnumber the cells in your body and collectively weigh about 3 to 5 pounds.
The average person takes about 23,000 breaths per day.
If all the DNA in your body were uncoiled and laid end to end, it would stretch to Pluto and back.
The human brain can generate about 23 watts of electrical power — enough to light a small LED bulb.
Pound for pound, bone is stronger than steel.
The pistol shrimp creates a cavitation bubble that briefly reaches temperatures of 8,000 degrees Fahrenheit.
There are more than 5,000 confirmed exoplanets discovered outside our solar system.
Dark matter makes up about 27% of the universe but has never been directly observed.
The Sun loses about 4 million tons of mass every second due to nuclear fusion converting matter into energy.
The longest word in the dictionary is 'pneumonoultramicroscopicsilicovolcanoconiosis,' a type of lung disease.
A jiffy is an actual unit of time — it equals one hundredth of a second.
There are more possible combinations on a Rubik's Cube than seconds that have passed since the Big Bang.
A hurricane can release energy equivalent to 10,000 nuclear bombs over the course of its lifetime.
Mushrooms are more closely related to animals than they are to plants.
A single tree can absorb about 48 pounds of carbon dioxide per year.
Mirror neurons in the brain fire both when you perform an action and when you watch someone else perform it, which may be the basis of empathy.
The color blue has been shown to suppress appetite, which is why it is rarely used in restaurant branding.
The mere presence of a smartphone on a desk — even turned off — reduces cognitive capacity and focus.
A single strand of spider silk is five times stronger than a strand of steel of the same thickness.