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Spaceships recycle everything... except astronaut's poop

13 Jun 2018

Astronauts inhale oxygen and exhale carbon dioxide, just like you and me. On Earth, where exhaled air warmed by our bodies naturally rises away from us, the possibility of inhaling too much carbon...

Beavers Have Metal Teeth

13 Jun 2018

I once broke my tooth on some toffee my mom made. Every time I see a beaver, I think of that day and wonder how they can gnaw on trees all day without chipping an incisor when I couldn鈥檛 even...

You Can Still See the Division of East and West Berlin from Space

7 Jun 2018

Berlin might be united now, but evidence of its 40-year history of division still remains. ...

Pangolins Use Rocks in Lieu of Teeth

31 May 2018

Pangolins, or scaly anteaters, are amazing little mammals. There are eight species of them, and they are the only living creatures in their order of Pholidota. Spread throughout Asia and Africa,...

How Old is Everything?

24 May 2018

Everything has a birthday. It鈥檚 the same day, about 13.77 billion years ago. Scientists claim that they are 99% certain that this is the age of our entire universe. But how could they possibly know...

Your Allergies Are Getting Worse Because of Climate Change

10 May 2018

If you feel like your recent periods of coughing, sneezing and shaking your fists at the trees for producing so much pollen are getting longer, you鈥檙e probably right.

Alcohol in mouthwashes doesn鈥檛 actually kill bacteria

3 May 2018

It鈥檚 common knowledge that alcohol can kill bacteria (it鈥檚 commonly used as a disinfectant), so it makes sense that the alcohol in mouthwashes is added specifically to kill the bacteria that give...

The pitohui bird contains deadly batrachotoxin

26 Apr 2018

Did you know that the聽pitohui ("pit-oo-eey,") bird of New Guinea聽is the only bird known to contain a toxin?

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