Black Hole Movies, Digital Heart Twins, and World Cup Tech
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M87's black hole flipped its magnetic field
Imagine a bar magnet with a north and south pole. Now imagine that magnet suddenly flipping so north becomes south and vice versa. That's essentially what happened with the magnetic field around the giant black hole at the center of galaxy M87 — except this black hole is 6.5 billion times heavier than our Sun. Scientists noticed this flip by watching the powerful beam of energy, called a jet, that shoots out from the black hole. The direction and behavior of that beam changed in a way that revealed the magnetic field had reversed. It's a big deal because those magnetic fields are thought to act like the engine that powers and steers these cosmic jets, and we've rarely caught one flipping in action.
Digital twin–guided ablation for ventricular tachycardia
Imagine your heart is a city, and ventricular tachycardia is like a traffic jam caused by a broken road — electrical signals get stuck going in circles instead of flowing properly, causing the heart to beat dangerously fast. Doctors can fix this by burning away the broken road using a procedure called ablation. The problem is, finding the exact broken road inside a beating heart is like navigating a city you've never visited before, while driving, in the dark. What these researchers did is take detailed MRI pictures of each patient's heart, build a 3D computer copy — a 'digital twin' — and then simulate where the electrical problem was happening inside that virtual heart. They tested their fix on the computer model first, figured out exactly where to go, and THEN performed the real procedure. What used to take three hours of exploratory surgery was done in about 30 minutes, because the doctors already had a GPS map before they started.
America 250: The Breakthroughs That Built American Science — Part 2
Part two of our America 250 special traces American science from Sputnik to the AI age, covering Apollo, ARPANET, CRISPR, LIGO, mRNA vaccines, JWST, transformers, and the future of science funding.
America 250: The Breakthroughs That Built American Science — Part 1
Part one of our America 250 special traces the inventions, institutions, and scientific breakthroughs — from Franklin to Sputnik — that helped build the United States into a global scientific power.
The Physics of the World Cup: VAR, Smart Balls, and Soccer Aerodynamics
A World Cup special on the science behind the beautiful game, from VAR and smart-ball sensors to soccer ball aerodynamics, pitch engineering, and match momentum analytics.
New Rules For Heredity (Non-Mendelian Inheritance of Epigenetics)
A new mouse genetics paper suggests that non-Mendelian epigenetic inheritance may be more common in mammals than previously thought.