Feb. 20, 1962, John Glenn first American to orbit Earth

On Feb. 20, 1962, astronaut John Glenn became the first American to orbit Earth as he flew aboard the Friendship…

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MaKey MaKey: An Invention Kit for Everyone – Buy Direct (Official Site) “MaKey MaKey is an invention kit for the…

CC Search “CC Search Find content you can share, use and remix” Tags: images, Resources, media, videos, open – By…

Feb. 7, 1984, the space shuttle astronauts Bruce McCandless II and Robert L. Stewart went on the first untethered spacewalk.…

historic aviation videos some with sound, some silent 91st Aero Sqn AEF Salmson 2 Reconnaissance 1918 RAF 1940 B-Type Helmet,…

The Electromagnetic Spectrum – Index page “The electromagnetic spectrum is more familiar to you than you might think. The microwave…

Plan Ceibal – Khan Academy Plan Ceibal has a separate Khan Academy Web site at http://khan.ceibal.edu.uy/ where they are apparently…

USA Howard Hughes Racing Aeroplane which holds the world’s land speed record of 352 miles per hour Jan. 19, 1937,…

The Museum of Unworkable Devices “fascinating devices that don’t work. It houses diverse examples of the perverse genius of inventors…