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Kevin Warwick poses with a transponder that can be implanted in a human. Warwick already has a similar chip in his arm that allows him to control various appliances in his office, making him the world’s first cyborg.

First cyborg discusses implications of mixing man and machine

Kevin Warwick, the world's first cyborg, and Yang Cai, a scientist at Carnegie Mellon, discuss the future and implications of cyborg technology.

How Things Work: Television Signals

Learn about the evolution of television signals, and how they are transmitted from their source to your television set.

“The Nightmare,” by John Henry Fuselli, captures the heaviness on the chest and strange imagery evoked by sleep paralysis.

HealthTalk: Sleep paralysis

When sleep cycle timing goes awry, a phenomenon called sleep paralysis can occur, which is when a person can dream while he is awake.

SciTech Briefs

The oldest object ever observed in the universe has been documented by scientists; it is estimated to have existed a mere 600 million years after the Big Bang.

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