We Have Ignition! NASA Tests New Rocket Engine in Mojave Desert

HOW do you test a new kind of rocket engine? Step 1: Bolt it to a trailer in the middle of the Mojave Desert. Step 2: Vroom!

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Make a Solar Water Heater for Less Than $5

THIS PROJECT will create a DIY solar hot water heater for less than five dollars. It will also allow you to see the principles of solar water heating in action, and is highly customizable.

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