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: Metamorphosis
Animals that go through metamorphosis look very different as adults than they did as kids.
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.
Analyze This!
Earth
Analyze This: Salt may quash lightning over the sea
Bits of airborne salt may help raindrops form, removing water from clouds before it can freeze as part of the process that makes lightning.
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.
