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Benford's Law states that in many naturally occurring datasets, the leading digit is more likely to be 1 than any other digit.
The number 73 is the 21st prime number, its mirror 37 is the 12th prime number, and 21 is the product of 7 and 3.
Infinity is not a number — it is a concept representing something without any limit.
The Birthday Paradox shows that in a group of just 23 people, there is a 50% chance that two people share the same birthday.
The Monty Hall problem demonstrates that switching doors on a game show gives you a two-thirds chance of winning rather than one-third.
There are 10 times more possible iterations of a game of chess than there are atoms in the observable universe.
The largest known prime number has over 24 million digits and was discovered in 2018.
A prime number is a number greater than 1 that has no positive divisors other than 1 and itself.
The sum of all numbers from 1 to 100 is 5,050 — a result famously discovered by Carl Friedrich Gauss as a child.
Euler's identity, e to the power of i times pi plus 1 equals 0, is often called the most beautiful equation in mathematics.
If you multiply 1089 by 9, you get 9801 — the reverse of the original number.
Pi has been calculated to over 100 trillion digits, but only 39 digits are needed to calculate the circumference of the observable universe to the width of a hydrogen atom.
A googol is a 1 followed by 100 zeros, and a googolplex is a 1 followed by a googol zeros.
111,111,111 multiplied by 111,111,111 equals 12,345,678,987,654,321.
The longest time anyone has gone without sleep under scientific observation is 11 days and 25 minutes.
The loudest burp ever recorded measured 112.7 decibels, louder than a chainsaw.
The longest fingernails ever grown on a pair of hands measured a combined total of over 28 feet.
Playing video games can improve hand-eye coordination, spatial reasoning, and decision-making speed.
Fire whirls, or fire tornadoes, form when intense heat creates a rotating column of air that picks up burning debris.
Volcanic glass, known as obsidian, can have an edge sharper than a surgical scalpel at the molecular level.
Aspirin was originally derived from willow bark, which was used as a pain reliever for thousands of years before being synthesized.
Metallic hydrogen, theorized to exist at extremely high pressures, could be a room-temperature superconductor.
The half-life of bismuth-209 is approximately 1.9 times 10 to the power of 19 years — far longer than the current age of the universe.
Absolute zero, minus 459.67 degrees Fahrenheit, is theoretically the lowest temperature possible.
Fire is not a solid, liquid, or gas — it is a chemical reaction that produces plasma, light, and heat.
Wind is caused by differences in atmospheric pressure — air flows from high-pressure areas to low-pressure areas.
The discovery of X-rays by Wilhelm Rontgen in 1895 revolutionized medicine and earned him the first Nobel Prize in Physics.
Supercooled water can remain liquid at temperatures as low as minus 55 degrees Fahrenheit under specific conditions.
A day on Earth is not exactly 24 hours — it is 23 hours, 56 minutes, and 4.1 seconds, known as a sidereal day.
Osmium is the densest naturally occurring element, weighing about 22.6 grams per cubic centimeter.
The speed of sound in steel is about 15 times faster than in air.
Ball lightning remains one of the least understood atmospheric phenomena, with no widely accepted scientific explanation.
The Sun converts about 600 million tons of hydrogen into helium every second through nuclear fusion.
A teaspoon of water contains about 500 billion billion molecules.
The Casimir effect demonstrates that two uncharged metal plates placed very close together in a vacuum will attract each other.
The fastest chemical reaction known involves the neutralization of acids and bases, occurring in about 10 femtoseconds.
Entropy, the measure of disorder in a system, always increases over time according to the second law of thermodynamics.
The observable universe contains approximately 10 to the power of 80 atoms.
Sonoluminescence is the emission of light from imploding bubbles in a liquid when excited by sound waves.
There is enough DNA in the average human body to stretch from the Sun to Pluto and back 17 times.
The Meissner effect causes superconductors to repel magnetic fields, allowing magnets to levitate above them.
Triboluminescence is the phenomenon of light being generated when a material is pulled apart, torn, or crushed — you can see it when biting wintergreen candy in the dark.
The double-slit experiment showed that particles of matter can behave as both particles and waves.
If you removed all the empty space from the atoms that make up every human on Earth, the entire world population could fit into an apple.
Time moves slightly faster at your head than at your feet because of the difference in gravitational pull.
A bucket of water contains more atoms than there are buckets of water in the Atlantic Ocean.
A woodpecker's skull has spongy bone structures that absorb the impact of pecking at 20 times per second.
Honeybees can be trained to detect explosives because they can identify specific chemical compounds in the air.
Dark energy makes up about 68% of the universe and is responsible for the accelerating expansion of space.
If you could fold a piece of paper 103 times, it would be thicker than the observable universe.