If you've ever been in a public restroom with a small child, you may have heard them complain about the hand dryers or seen them covering their ears as they walk by them.

It turns out, there's a scientific reason for that.

Nora Keegan of Calgary, Canada just published a paper in a medical journal with research proving that hand dryers may be detrimental to children's hearing. But the coolest thing? She's only 13.

When she was younger, Keegan noticed that her ears would sometimes ring after she starting using hand dryers in public restrooms. "I also noticed that children would not want to use hand dryers, and they'd be covering their ears," she told NPR.

So at age nine, she decided to explore whether automatic hand dryers might actually damage children's hearing. Between 2015 and 2017, she tested the volume of 44 hand dryers in public restrooms in Alberta, Canada. Using a decibel meter, she measured the noise levels of different hand dryers from various heights and distances.

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Dancing, singing, baton-twirling—when it comes to the talent portion of beauty pageants, we generally know what to expect.

But Camille Schrier turned that standard on its head when she performed an explosive science experiment for her talent in the Miss Virginia 2019 competition. The 24-year-old biochemist demonstrated and explained the catalytic decomposition of hydrogen peroxide, a chemical reaction that happens when a catalyst (potassium iodide in this case) comes into contact with hydrogen peroxide. Schrier mixed the chemicals in three large flasks on a table, making colored foam spout high into the air and land in goopy piles on the stage.


How Miss Virginia Won Her Crown Thanks to Science www.youtube.com

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Astronomer Vera Rubin passed away Dec. 25, 2016, at the age of 88.

Vera Rubin. Photo by Carnegie Institution of Washington.

Rubin was a pioneer in her field — one of the few prominent women astronomers of her time, who, in an era of oppressive professional sexism, uncovered some of the best evidence of the existence of dark matter — the mysterious stuff that we can't see that binds the universe together.

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