Study says cleaning sprays can have the same impact on your health as smoking 20 cigarettes a day.
Mystery of the pyramids' alignment finally solved by simple shadow trick
February 20, 2018, 5:33 p.m. by Bryan Nelson
How the ancient Egyptians built such precise structures may not have been so complicated after all.
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For a quick lesson on gene editing or blockchain, there's Five Levels of Difficulty
February 20, 2018, 5:21 p.m. by Shea Gunther
Video series challenges an expert to explain a complicated concept to people at five levels of expertise.
Fabled 'Gate to Hell' really did kill people — and now we know why
February 20, 2018, 4:41 p.m. by John Platt
The ancient Romans saw 'Pluto's Gate' as the entrance to the underworld.
What frustrated squirrels can teach us about perseverance
February 20, 2018, 10:51 a.m. by Russell McLendon
Exasperation may be key to problem-solving, scientists say after studying squirrels at a balky vending machine.
If we want more people in the U.S. to donate organs, we might have to change how we ask
February 20, 2018, 8:39 a.m. by Mary Jo DiLonardo
It's an easy way to solve organ shortages and save lives.