HOW CAPTCHAS WORK
You're using your computer to purchase tickets to see a concert at a local venue. Before you can buy the tickets, you first have to pass a test. It's not a hard test -- in fact, that's the point. For you,
China Says We Don't Want Your Plastic
Bales of sorted plastic stand at the ALBA sorting center in Berlin, Germany, which sorts plastics, metals, films, wrappers, drink cartons and other waste. Germany routinely shipped its plastic overseas
How an optical mouse works
I always wanted to know, so i thought i would share An optical mouse works in a completely different way. It shines a bright light down onto your desk from an LED (light-emitting diode) mounted on the
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HOW STUFF WORKS EP. 2 - WHAT WILL HAPPEN IF INSECTS DISSAPEARED FROM THE PLANET??
"Ewwww ... a bug!" is the reaction many people have when they feel an insect's six legs crawling on them. This revulsion is lamentable, for not only are the vast majority of insects completely
How does a jet engine work?
Jets have been mesmerizing my life from the age of 4 when I went to my first airshow. The JAS 39 Gripen was the first jet that blew my mind. I recently visited another airshow and was astounded by the