How a differential gear works
"This great old video is a remarkably clear explanation of how a differential gear works -- the kind of thing that you could show to a young child or an adult and make the lightbulb go on for both of them. "
Physical Clutter Crowds Out Other Thoughts and Steals Focus
"A scientific study, however, explains what clutter does to your brain: it competes for attention, and crowds out the actual thoughts you want to move through."
Make Sure You're Prepared for Disaster with a 72-Hour Kit [Emergency]
"After Japan's earthquake and tsunami earlier this morning, most of the West coast and Hawaii are both under a Tsunami warning. If you don't have an adequate emergency kit in your home, here's how to put one together so you're prepared in the event of an emergency."
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