Did humans evolve with grasslands?

Scientists have uncovered a 24-million-year record of vegetation in the region of east Africa where early humans likely evolved.

Join the fun at ALCon 2016

ALCon 2016 is the national amateur astronomy convention, held this year from August 10-13 in Washington, D.C. Registration is now live!

Help astronomers observe Tabby’s Star

They're using Kickstarter to raise funds needed to unravel one of astronomy's biggest mysteries. Is the star KIC 8462852 surrounded by an alien megastructure?

Deciphering mysterious honey bee decline

While the massive and sudden colony collapses that occurred a decade ago have abated, honey bees are still dying at troubling rates.

Pleiades setting through Sappho’s eyes

Sappho, a renowned poet of ancient Greece, wrote of the Pleiades star cluster setting at midnight. Scientists have wondered, what time of year did she see it?

Man-eating crocodiles captured in Florida

Monster Nile crocodiles might be Florida’s newest invasive species.

Are these non-humans conscious?

Lots of non-humans – octopuses, crows, monkeys, machines – are intelligent. Could some also be conscious?

Your top 4 questions about tornadoes

May is the peak month for twisters here in the U.S.

Do you have friggatriskaidekaphobia?

May 13 is 2016's lone Friday the 13th. Here’s the story behind Friday the 13th superstition and numerology.

Your top 3 tips to avoid mosquito bites

Simple things you can do to get fewer mosquito bites this summer.

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