Canadian Max Donelan (above, right) has figured out how to harness the energy of a walker's step in the same way that hybrid-electric cars recycle power from braking. Volunteers generated about 5 watts of electricity, or enough to power 10 cellphones, simply by walking with the device. Some day, it might be used to power robotic arms or computers in the developing world, researchers wrote in Science.
(Science)
Discoveries
Smoking can extinguish a good night's sleep
Canadian Max Donelan (above, right) has figured out how to harness the energy of a walker's step in the same way that hybrid-electric cars recycle power from braking. Volunteers generated about 5 watts of electricity, or enough to power 10 cellphones, simply by walking with the device. Some day, it might be used to power robotic arms or computers in the developing world, researchers wrote in Science.
(Science)
Here's another good reason to put away those cigarettes - a new study shows that smoking can lead to unhealthy sleep patterns, making you feel groggier the next day. Scientists have long speculated that smokers have poorer sleep quality than nonsmokers because of conditions associated with the habit, such as sleep apnea and lung disease. Now, research from Johns ... (Full article: 555 words)
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