W hen most people think of shapes, they imagine a triangle, a rectangle, or maybe even a fancier- sounding rhombus or trapezoid. But to mathematicians, shapes encompass a vast universe of surprising ...

IQ Test Challenge! Can you solve this non-verbal reasoning arrow puzzle in 5 seconds? Spot the pattern and test your brainpower now. Only 5% get it right!

Crows can recognize geometric patterns, suggesting that humans aren't unique in understanding shape structure.

The May issue of Scientific American takes you on a deep-sea mining mission, explores dark comets and examines an invisible threat to the food we eat ...