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Bees understand the concept of zero

Scientists just learned that honeybees can understand the concept of zero. That puts bees in an elite club of clever animals – some birds, monkeys, humans – that can grasp the abstract notion of nothing.

Gulf of Mexico 2018 dead zone forecast

NOAA scientists project that this summer’s Gulf of Mexico hypoxic zone or ‘dead zone’ – an area of low to no oxygen that can kill marine life – will be about the size of Connecticut.

What we inherited from bug-eating mammal ancestors

If you’re an advocate for insects in human diets, go ahead. Munch on a grasshopper. The genes needed to digest bugs are still in our genome, inherited from the tiny, furry distant ancestors of all mammals, including humans.

Watch spacewalk June 14

On Thursday, 2 astronauts aboard the International Space Station will conduct a 6 1/2 hour spacewalk. NASA’s live coverage begins at 10:30 UTC (6:30 a.m. EDT). The spacewalk itself is scheduled to start at 12:10 UTC (8:10 a.m. EDT).

Coyotes in the park

Coyotes are the most famous of the wild animals species that have returned to North American cities and towns in recent years. Encountering them can be unnerving.

When is Eid in 2018?

A day – or two – after this month’s new moon, Muslims will celebrate Eid al-Fitr, the festival of breaking the fast. A young moon sighting determines its date. 

How far away was that lightning?

When you see a flash of lightning, do you count seconds until it thunders? An atmospheric scientist comments …

Mars explorers wanted!

Can you picture yourself as an explorer, farmer, surveyor or teacher on Mars? Download a NASA Mars poster (free!) that speaks to you.

Explore 20 years of Earth data

From NASA, 2 decades of planetary change. See detailed views of volcanoes fuming, hurricanes flooding, dams being built, wildfires sweeping across landscapes and more.

When did humans learn to count?

Linguistic clues show how people around the world first developed mathematical thought.