Free Science Videos and Lectures

Neutron slams into the nucleus of a heavy element which causes a nuclear fission creating two ligher elements (fission products) and more free neutrons.

These free neutrons are absorbed by other...

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nucleus, nuclear fission, neutrons, fission products, chain reaction

British (department of genetics at Cambridge University) scientist Aubrey de Grey, Ph.D., is interviewed by CBC news correspondent Portia Clark after a lecture at the University of Alberta...

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aubrey de gray, phd, aging, genetics, health, life, mice, therapy

The giant octopus is extremely common throughout the Pacific North West and they held a regular spot on display of the Seattle Aquarium over the years. But when the keepers decided to move one into...

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giant octopus, pacific north west, seattle aquarium, sharks, fish, carcass, tank

The interior of an 18" square x 1" piece of Plexiglas was charged to 2.2 million volts (MV) using a 5 MV particle accelerator. A layer of excess electrons become trapped deep inside. When...

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electrons, potential, lightning, plexiglas, lichtenberg figure, sculpture, charge, voltage, flash

To reach other intelligences our technology must reach beyond interplanetary distances it has to go interstellar distances.

The largest radio radar telescope on the planet Earth - Arecibo radio...

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life, stars, carl sagan, milky way, galaxies, intelligence, civilization, radio telescope, extraterrestrial, arecibo, puerto rico, m15, signal, prime numbers