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Safety and Chemistry of the Self-Cleaning Oven

18 Jun 2018

Si vous voulez聽lire cet article en fran莽ais,聽cliquez ici!

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...

Can "Dog Rocks" stop dogs from staining my lawn?

7 Jun 2018

鈥淒og Rocks鈥 are supposed to solve the problem of grass dying from dog pee. Urine contains a variety of nitrogen compounds, mostly metabolites of protein in food. These are effective fertilizers,...

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. ...

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...

Silver Tarnish and Tarnished Claims

23 May 2018

Silver is more than just an object of beauty.聽It鈥檚 the stuff of memories.聽Prior to digital photography, all picture taking relied on compounds of silver.聽The reduction of silver ions to metallic...

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