Fossils
Rhinos, camels and bone-crushing dogs once roamed Nebraska
Scientists digging into the remnants of an ancient watering hole in Nebraska discovered evidence of an Africa-like savanna, complete with rhinos.
Word of the Week
Chemistry
Scientists Say: Metal
Metals are substances that can be elements, alloys or compounds. They all conduct heat and electricity and can be formed into different shapes.
Explainers
Animals
Explainer: What are cicadas?
There are more than 3,000 species of cicadas, but the best known in North America are periodical cicadas, which emerge every 13 or 17 years.
Technically Fiction
Physics
Staying grounded in space requires artificial gravity
On TV, people in space walk around like they’re on Earth. How can science give real astronauts artificial gravity? Spin right round, baby.
What's Hot
COVID-19 vaccines
Watch This
A sea slug’s head can crawl around and grow a whole new body
Some chopped-up flatworms can regrow whole bodies from bits and pieces. But a sea slug head can regrow fancier organs such as hearts.
