Science
Discover facts about science. Small discoveries that change the way you see familiar things.
Science
The vacation expecting parents take before the baby arrives
A babymoon is a trip expecting parents take before their baby arrives, and the term itself dates to the late 20th century. Think of it as a getaway scheduled…
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Spiders use hydraulic pressure to extend their legs
Fluid pressure helps straighten a spider’s legs, so the animal doesn’t need an outward-pushing muscle at every joint. When pressure drops after death, the…
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Why isolating fluorine was a deadly challenge
A vessel is supposed to keep a gas separate from everything else. Fluorine complicates that plan: it readily takes electrons from other atoms and can react…
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Our sun consists entirely of superheated glowing plasma
The Sun is plasma: its extreme heat strips electrons from atoms, leaving charged particles rather than the neutral atoms of an ordinary gas. Those charges…
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The viruses that hunt cholera bacteria
A vibriophage latches onto a cholera bacterium and injects its genetic material. The bacterium follows those instructions to make more phages, which can burst…
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The giant storm Robert Hooke spotted on Jupiter
The giant spots on Jupiter are storms in its deep atmosphere, not stains on a solid surface. A storm linked to Robert Hooke’s observation may have lasted for…
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Astrology claims the asteroid Pallas governs how you solve problems
Astrology gives the asteroid Pallas a role in strategy and problem-solving, but there’s no scientific evidence that it shapes those abilities. The association…
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How elephants walk quietly despite their size
An elephant’s foot has a springy pad that squashes under its weight and spreads the load. The pad also soaks up some of the vibrations that would make a hard…
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The weak nuclear force drives radioactive decay by changing protons into neutrons
In beta-plus decay, a proton in an atomic nucleus changes into a neutron and releases a positron and a neutrino. With one fewer proton, the nucleus becomes a…
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J. J. Thomson showed that atoms were not the smallest pieces of matter
Thomson sent cathode rays through electric and magnetic fields and watched them bend. The deflection showed that the rays carried negative charge; it also…
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Some of the earliest writing was bookkeeping
Early Mesopotamian tablets recorded goods, quantities, and transactions. Keeping an external record meant an obligation no longer depended entirely on…
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Irrational numbers refuse to become simple fractions
Draw a square with sides of length 1 and measure its diagonal: the right-triangle rule says its length squared is 1² + 1², or 2. So the diagonal is √2, a…
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Trying to hide something online can make it famous
A little-known image may stay obscure until people hear someone is trying to remove it. The takedown becomes news, curious readers go looking, and links start…
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When cold air makes your skin break out in hives
A cold-triggered hive may wait until you warm up to become obvious. The cold exposure prompts histamine release from the immune system, and that response…
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Free fall feels completely weightless inside a vacuum
A scale feels your weight by pushing up on you. In free fall, that push disappears, so you feel weightless even while gravity is pulling you downward.…
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The invisible dots tracking your website visits
A tracking pixel is often a tiny image loaded from a server when you open a page or message. That request can tell the server when it happened and reveal the…
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Ceres built a mountain from something colder than lava
NASA's Dawn observations point to Ahuna Mons as a cryovolcano: a dome formed by material including salty water and mud rather than molten rock. It is no…
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Fermat left a claim in a margin that outlived him by centuries
His theorem rules out positive whole-number solutions to xⁿ + yⁿ = zⁿ for integer powers greater than two. He wrote that he had a proof but lacked room for…
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Why one bad bounce can kill your trampoline jump
A trampoline’s springs carry each jumper’s bounce across the frame. If that wave reaches you just as you land, the mat may be moving downward instead of…
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A leech's bite can keep bleeding after the leech leaves
Its saliva contains substances that interfere with clotting, including hirudin, which blocks thrombin. That keeps blood flowing while the animal feeds, and…
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Mount Vesuvius sits uncomfortably close to populated zones
Vesuvius can endanger nearby towns without sending lava into their streets. An eruption can drive hot gas and debris rapidly along the ground, while falling…
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Some sea cucumbers escape by ejecting parts they can regrow
Certain species release sticky internal structures through the rear of the body to deter a predator, then regenerate them. Other species shed different…
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Rain can carry traces of vitamin B12
A raindrop can pick up airborne bacteria that produce vitamin B12 and bring traces of the vitamin to the ground. Think of the drop as a passing bus for…
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You and a banana still use some ancient cellular machinery
Humans and banana plants inherited related genes from distant common ancestors. Cells on both sides still need to copy genetic information, make proteins, and…
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