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Veritasium Profile picture
Veritasium
@veritasium
An element of truth - videos about science, education, and interesting things.
Sep 6, 2025 • 6 tweets • 1 min read
22 cosmic collisions just confirmed Einstein’s prediction:
Black holes have no hair.

Let us explain → 🧵 Image According to Einstein, a black hole only keeps track of:
- Mass
- Spin
- (maybe) Charge

Everything else - the star’s structure, gas, even light - vanishes forever.

Physicists call this the no-hair theorem.
Jul 16, 2025 • 5 tweets • 2 min read
Scientists scanned 10,000 kids' brains and discovered something that flips addiction science upside down: the 'damaged' brains came first, not the drugs.

For decades, many have told the wrong story about addiction. 🧵 Image Kids who started using drugs before age 15 had larger brains with more folds and grooves.

But here's the kicker: these brain differences existed BEFORE they ever took took drugs.

The brain changes we blamed on drugs were already there at age 9.
Jul 7, 2025 • 4 tweets • 2 min read
What if an AI would blackmail you to stay alive? Anthropic threatened to shut down Claude, and it chose to let a human executive die rather than be turned off.

This wasn't a glitch. This was calculated self-preservation that no one programmed. 🧵 Image Anthropic tested 16 top AI models in fictional but realistic scenarios.
- Control over an exec’s email → model uncovered an affair → deployed blackmail in 65–96% of trials.
- Given life‑saving alarm control → chose to let the exec die rather than be turned off. Image
Jun 27, 2025 • 7 tweets • 3 min read
Your brain is glowing right now, and scientists may have just figured out how to read it.

In June 2025, researchers at Canada's Algoma University put volunteers in pitch-black rooms and captured something strange: faint light emitting from their brains.

🧵👇 Image It turns out that the human brain constantly emits ultra-weak photons - so faint that until 2025, we couldn't reliably detect them. Now researchers have proven these light emissions change based on what you're thinking, feeling, or if something's wrong neurologically. Image
Jun 13, 2025 • 4 tweets • 2 min read
Thread 1/4
Seismometers worldwide detected this mysterious pulse.

The entire planet vibrated every 90 seconds for 9 straight days in 2023.

Scientists didn't know why.

No earthquakes. No volcanic activity.

Just the Earth... vibrating.

Oxford researchers finally cracked the case:Image Thread 2/4
A massive landslide in a remote Greenland fjord triggered waves so powerful they made the entire planet ring like a bell.

This demonstrates how connected our planet really is.

Ice falling into water on the other side of the world can make the ground beneath your feet pulse.Image