An impact crater in Quebec, 25 km wide and 390 million years old, was spotted by an amateur planning a camping trip. How he found it, and why experts listened.
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How to Spot Fake News: Why Arguing It Out Beats Thinking Alone
How to spot fake news? A 2026 study found thinking it over alone barely helped, but six minutes of friendly argument did. Here is how to use it with two people.
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How Cats Recognize Each Other: Scientists Found a Scent ID That Barely Fades
How cats recognize each other: 13 rare fatty acids in cat urine form a scent ID that barely fades, and cats remember it for months. What scientists found.
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New Penguin Species: The Gentoo Hiding in Plain Sight
A new penguin species, the southeastern gentoo, stood unnoticed on the remote Kerguelen Islands for years. Here’s how scientists found it and why it matters.
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Black Hole Jets Follow One Rule, From Small to Supermassive
Black hole jets switch on at the same point, about 2% of the feeding limit, whether a black hole weighs 10 Suns or millions. And why some fire years late.
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Protecting Forests Beats Replanting Them, a Huge Amazon Study Finds
Protecting forests beats replanting them, a 3.2-million-hectare Amazon study finds. The danger isn’t only the chainsaw. A forest can stand and still be lost.
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The Plague Kept Coming Back for 400 Years. So Did One Question.
New ancient DNA shows the plague after the Black Death kept returning to Europe for 400 years. In 1527 Luther was asked if you may flee. His answer still holds.
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Gravitational Constant: The Number Physics Can’t Pin Down
The gravitational constant is the one number physics still cannot pin down: a 10-year NIST experiment, a sealed envelope, and an error bar padded by hand.
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Rare Earth Elements in Coal Ash: $8.4 Billion in Waste
Rare earth elements in coal ash may be worth $8.4 billion. But the richest ash gives up the least, and that strange gap is the real story behind the numbers.
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MAL Blood Group: The 50-Year Mystery, Finally Named
The MAL blood group closed a 50-year blood mystery in 2024: one 1972 sample, one missing marker, and two decades of work aimed at barely a handful of people.