To reach other intelligences our technology must reach beyond interplanetary distances it has to go interstellar distances.
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The most famous American astronomer and astrophysicist Carl Sagan explains the Drake equation.
Sagan was central to the discovery of the high surface temperatures of the planet Venus.
Here is a demo of transparent cement. It's almost as tough as the usual one but it also lets through light.
The usual touch screens usually allow just a single touch interaction. This new technology is designed to be usable by both hands or by multiple persons.
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