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1,964 facts in Science. Click any fact to see its full page.
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Puberty has been starting progressively earlier over the past century — likely due to nutrition and environmental factors.
Identical twins have different fingerprints — shaped by unique positions in the womb.
Twins can have different fathers — a rare phenomenon called heteropaternal superfecundation.
The Arctic oscillation and North Atlantic oscillation influence weather patterns across Europe and North America.
Thunderstorms produce enough energy in a single storm to power a city for years — if it could be captured.
Microbursts are intense downdrafts from thunderstorms — they have caused numerous plane crashes during takeoff and landing.
A hypercane is a theoretical mega-hurricane that could form if ocean temperatures exceeded 50°C.
The human brain is the most complex known object in the universe.
The paradox of tolerance, identified by Karl Popper, states that unlimited tolerance leads to the destruction of tolerance.
The axolotl can regenerate its heart, brain, and spinal cord — unlike any other vertebrate.
A sneeze expels air at up to 100 mph and can travel 5 feet before dissipating.
A jiffy is a real unit of time — either 1/100th of a second or 3×10⁻²⁴ seconds in physics.
There are more possible iterations of a game of Go than atoms in the observable universe.
Humans share 70% of their DNA with sea sponges.
Glass is technically a supercooled liquid — it flows, but on geological timescales.
The Rubik's Cube has 43 quintillion possible configurations — but any can be solved in 20 moves or fewer.
Grapes explode in a microwave — the geometry focuses microwaves and creates plasma.
Humans are bioluminescent — but the light is 1,000 times too faint for the naked eye to see.
The average person walks past 36 murderers in their lifetime, statistically.
Bananas are slightly radioactive due to their potassium-40 content.
The human brain generates about 23 watts of power — enough to power a dim light bulb.
The average person walks the equivalent of 3 times around the Earth in their lifetime.
Every year, 98% of the atoms in your body are replaced.
You share 50% of your DNA with a banana and 85% with a mouse.
A bolt of lightning contains enough energy to toast 100,000 slices of bread.
There are more possible shuffles of a deck of cards than atoms on Earth.
The Eiffel Tower grows by up to 6 inches in summer due to thermal expansion.
The quantum eraser experiment shows that future measurements can retroactively change past quantum behavior.
The Drake Equation estimates the number of communicating civilizations in the galaxy — but several terms remain unknown.
Quantum field theory describes particles as excitations of underlying quantum fields that permeate all of space.
The information paradox — whether information is lost in a black hole — remains one of physics' deepest unsolved problems.
Superstring theory predicts 10 dimensions — our failure to detect the extra dimensions may mean they are too small.
The speed of gravity is equal to the speed of light — confirmed by the simultaneous detection of gravitational waves and light from neutron star merger.
The Chandrasekhar limit (1.4 solar masses) is the maximum mass for a stable white dwarf.
Neutrinos come in three 'flavors' — electron, muon, and tau — and can change between them (neutrino oscillation).
The zero-point energy of the vacuum is real and measurable — the Casimir force between metal plates proves it.
Wave function collapse describes how quantum superposition resolves into a definite state upon measurement.
Quark-gluon plasma — the state of matter a microsecond after the Big Bang — has been recreated at CERN.
The theoretical maximum temperature is the Planck temperature (1.4 × 10³² K) — above it, physics breaks down.
Baryonic matter (atoms) makes up only 5% of the universe — the rest is dark matter and dark energy.
The proton has been the subject of the 'proton radius puzzle' — measurements disagreed for years before resolution.
The half-life of the free neutron (outside an atom) is about 10 minutes — then it decays into a proton, electron, and antineutrino.
The collapse of a supermassive star produces more elements in seconds than all the stars in a galaxy do in their lifetimes.
Quantum tunneling allows particles to pass through energy barriers — it powers nuclear fusion in stars and scanning tunneling microscopes.
The electron has no known size — experiments constrain its radius to less than 10⁻¹⁸ meters.
Gravity is by far the weakest of the four forces — it's 10³⁶ times weaker than electromagnetism.
The holographic principle proposes that all information in a 3D space is encoded on its 2D surface.
The Boltzmann equation for entropy underlies thermodynamics and explains why time has a direction.
Quantum chromodynamics (QCD) describes the strong nuclear force — quarks are bound by gluons.
The Pauli exclusion principle prevents two fermions from occupying the same quantum state — it's why matter is solid.