Brewster Kahle is building a truly huge digital library -- every book ever published, every movie ever released, all the strata of web history ... It's all free to the public -- unless someone else gets to it first.

Chris Lehmann is the founding principal of the Science Leadership Academy, a progressive science and technology high school in Philadelphia, PA. The Science Leadership Academy is an inquiry-driven, project-based, 1:1 laptop school...

Arduino Course for Absolute Beginners



Knowing if something is on or off can be extremely useful, but often you will want to know more. How bright is the light? How fast is the satellite...