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Light Bulb
Before 1880, when the sun went down, you either went to bed or you burned something — like whale oil or a kerosene lamp ...
Batteries
If somebody gave you a lemon, could you make a battery? Do you know which batteries don’t need to be recycled — and which do? Should you store ...
What’s Inside an iPad?
Have you ever wondered what it looks like inside an iPad 2? How thick and strong is the glass? Where is the CPU? How big are the batteries? Taking your mom’s iPad apart is NOT ...
Submarines
In 2012 a submarine called the Deepsea Challenger took explorer James Cameron to the deepest part of the ocean, more than seven miles down. Subs like his use some amazing technology. ...
Robots
Even before there was electricity, there were robots.
Want proof? On Wikipedia.org, you can learn about a famous robot made ...
Glass
Steve Jobs—it turns out—was more than a computer inventor. He also invented with glass. Besides using slipperly glass for the screens ...
Myths About Moths
Summertime is a great time to hunt for the giant green Luna moth. But, it also brings up some common questions.
Where do moths they live?
What’s the difference between ...