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You've probably heard reports about a recently-developed technological device that may help quadriplegics regain control of their limbs. The device is designed to read the quadriplegic's brain waves, and then transfer those signals to electrodes that stimulate…
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Geology
How Do We Predict The Climate--100,000 Years Ago?
Since the only ice age that occurred during human existence ended 10,000 to 12,000 years ago, how can we know…
Engineering
Drip, Drip Water Clocks
Water clocks were among the earliest timekeepers that didn't depend on the observation of celestial bodies.…
Engineering
Sundials, Ancient Clocks
The earliest and simplest form of sundial is the shadow stick. The time of day is judged by the length and…
Biology
Microarrays: Chipping Away At The Mysteries Of Science And Medicine
With only a few exceptions, every cell of the body contains a full set of chromosomes and identical genes.…