Tech
Can a robot ever become your friend?
Social robots can teach, help and keep people company. What would it take for machines to form real friendships with people? And do we even want that?
Word of the Week
Animals
Scientists Say: Kakapo
This is a flightless parrot that lives in New Zealand. Unfortunately, there are only 154 of them left.
Explainers
Climate
Explainer: What is decarbonization?
Lowering carbon levels in our atmosphere to stabilize the climate may start with switching from fossil fuels to greener energy sources.
Experiments
Physics
How salty does the sea have to be for an egg to float?
Some objects float on top of the ocean, and other objects sink to the bottom. Why? Try this eggs-periment to find out!
What's Hot
Cold Season
Watch This
Sea sponges spew slow-motion snot rockets to clear out their pores
Sea sponges rely on a sneezing technique to clear their pores. The mucus flushes out debris — and provides a snack for other marine life.
