Biotechnology
Scientists have sequenced much of the genome of the woolly mammoth, raising the possibility that the long-extinct ice-age mammal could one day be resurrected.
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Engineering
Important pedestrian safety issues have emerged with the advent of hybrid and electric vehicles. In a recent study, researchers examined participants' preferences for sounds that could be added to quiet vehicles to make them easier to detect.
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Information
Proper spacing of lessons, the researchers report, can dramatically enhance learning. And larger gaps between study sessions result in better recall of facts. Conversely: Cramming is ineffective in the long haul.
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Health
Young people may be risking long-term damage to their hearing if they don't change their listening habits, according to a study of high school students in Ontario.
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Environment
Half the world's population could face a shortage of clean water by 2080 because of climate change, experts warn. Global warming is disrupting water flow patterns and increasing the severity of floods, droughts and storms — all of which reduce the availability of drinking water.
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