Latest Opinion
Is Mars really red? A physicist explains the truth.
Mars isn't a bright, fire-engine red, but the iron oxide in its rocks makes it appear redder than other planets, especially from afar.
In 2025, Tornado Alley has become almost everything east of the Rockies — and it's been a violent year
Opinion A storm scientist explains what's been driving deadly tornado outbreaks and how tornado season has been changing.
Common parasite decapitates human sperm
If you've handled cat litter or eaten raw meat or unwashed produce, there’s a chance you might have a permanent toxoplasmosis infection spread throughout your body.
'Statistically, that shouldn’t have happened': Something very weird occurred in the ocean after the dinosaur-killing asteroid hit
Not everything dies in a mass extinction. Sea life recovered in different and surprising ways after the asteroid strike 66 million years ago. Ancient fossils recorded it all.
How long would it take for humans to go extinct if we stopped having babies?
Opinion Even though there are 8 billion people on Earth today, a catastrophe could send that number much lower within a few decades.
Instead of 'de-extincting' dire wolves, scientists should use gene editing to protect living, endangered species
Opinion A legal scholar with a doctorate in wildlife genetics explains the promise biotechnology techniques hold for some animals that are currently endangered.
Robots run out of energy long before they run out of work to do — feeding them could change that
Even the best batteries fall far short of animal metabolism for energy storage. Fueling robots with 'food' could narrow the gap.
AI 'hallucinates' constantly, but there's a solution
Opinion Neurosymbolic AI combines the learning of LLMs with teaching the machine formal rules that should make them more reliable and energy efficient.
What if the Big Bang wasn't the beginning? New research suggests it may have taken place inside a black hole
Was the Big Bang really the beginning of the universe, or are we 'bouncing' between periods of expansion and contraction? A new theory makes testable predictions.
What goes up must come down: How megaconstellations like SpaceX's Starlink network pose a grave safety threat to us on Earth
Opinion Thousands of satellites with incredibly short lifetimes are being sent up into low Earth orbit. When they fall back down they're fireballs of pollution — and what doesn't burn up hits the ground.
