Latest about Life's Little Mysteries
How is Roman concrete still standing after 2,000 years?
Roman concrete's durability comes from a combination of its ingredients and production methods.
How many satellites orbit Earth?
The number of satellites orbiting our planet is rising fast, thanks to private "megaconstellations" that pose various threats to space exploration and astronomy. But how big has the problem already become?
Why do elephants have big ears?
Elephants have the largest ears in the animal kingdom, and there's a practical reason for that.
What's hiding under Antarctica's ice?
Antarctica is the fifth-largest continent by size, so what's hiding under its massive sheaths of ice?
When was math invented?
Humans started counting tens of thousands of years ago, but when did they begin figuring out advanced arithmetic, algebra and even calculus?
What's the difference between apes and monkeys?
Primatologists explain how apes and monkeys differ.
How do archaeologists figure out the sex of a skeleton?
Archaeologists can estimate a person's sex with 95% accuracy, but many experts are focused on what can be learned about humans outside the male/female gender binary.
Do other planets have seasons?
Earth has four seasons, but do other planets in our solar system also have hot summer days and cold winter nights?
