
AI scores a ‘C–’ on its hardest math test yet
The second batch of “First Proof” problems is meant to evaluate AI’s usefulness for research-level math. The best model got six or seven of the 10 questions basically right

AI scores a ‘C–’ on its hardest math test yet
The second batch of “First Proof” problems is meant to evaluate AI’s usefulness for research-level math. The best model got six or seven of the 10 questions basically right
Science confirms: Cats help you only when there’s something in it for them
Today’s Spellements

How to build kids’ ‘cognitive endurance’ in an age of distraction
The 2026 World Cup’s grass is an engineering problem

Quantum computing is reaching its make-or-break moment
What’s a quantum computer good for, anyway?
NASA’s Artemis era may finally solve three major moon mysteries
Create as many words as you can!
Stretch your math muscles with these puzzles.

Why we'll never live in space
The puzzle of the first black holes
What if we never find dark matter?
World Cup kicks off amid outbreak tracking as Mars mission ends and AI fights heat up
Inside the multiyear effort to rename PCOS
A new Ebola outbreak has killed hundreds—and the U.S. response is alarming experts

Science confirms: Cats help you only when there’s something in it for them
Dogs spontaneously aid struggling humans the way young children do—whereas cats wait until they stand to benefit

How Canadian rock duo Angine de Poitrine play with neurobiology and physics to make viral music
Angine de Poitrine don't abide by the usual rules of Western music, using their own custom-built guitar to strike notes that shouldn't exist

The Philippines earthquake is massive, but it could’ve been bigger—here’s why
The magnitude 7.8 earthquake that hit the Philippines happened at a subduction zone. Such places are capable of producing the largest earthquakes possible

U.S. gets a new sunscreen ingredient after 27 years—here’s how it works
Dermatologists and skincare aficionados are excited for the U.S. to finally get a new, more protective sunscreen filter after more than 20 years of regulatory roadblocks. Here’s how bemotrizinol works

How to tell if your dog is left-pawed or right-pawed, according to science
A step-by-step guide to the “Doginburgh Inventory,” a new pawedness test developed by dog behavior researchers

Resistance training may boost longevity. But how much do you need?
Weight lifting and other forms of resistance training can increase bone density, lower diabetes risk and boost mental health