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From Greek fire to Roman concrete, scientists still don't totally understand how these marvelous ancient inventions functioned.
Lorna Wallace|
All modern humans may descend from a small group of people who survived a catastrophic event just over 70,000 years ago.
Logan DeLoye|
Chlorine actually has a neutral smell—so if your pool smells strongly of chlorine, it's actually not a good sign.
Eden Gordon|
Heat domes—which are behind some of summer's most extreme temperatures—occur when high pressure systems trap heat in the atmosphere.
Eden Gordon|
Experts aren't positive why some people hear a humming noise that never ceases. However, new research may offer an explanation for the sound, which inspired the show "The Listeners."
Eden Gordon|
That cold shower may not be the miracle cure you think it is. Here are seven common misconceptions about heat waves, and some tips on how to stay cool.
Eden Gordon|
It’s such a natural reaction, but how did this custom begin?
Paul Anthony Jones|
Why are sunsets red, for that matter? And why is space black? The answer is all about how light interacts with Earth's atmosphere.
Eden Gordon|