单词：yeast cells
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By Nancy Steinbach Broadcast: September 24, 2003 This is Phoebe Zimmermann with the VOA Special English Health Report. For many years, researchers have been studying ways to extend life and to improve
VOA2003（下）-环境与健康
This is Scientific American's 60-Second Science. I'm Christie Nicholson . Got a minute? Altruism poses a problem for the theory of survival of the fittest. If we help others at a cost to ourselves, nice-guy behavior should die out, because we are giv
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AUDIE CORNISH, HOST: Scientists have taken a big step towards making synthetic life. In other words, they figured out how to create a living thing with DNA that was written in a lab. NPR health correspondent Rob Stein has the details. ROB STEIN, BYLI
2017年NPR美国国家公共电台3月
The 2016 Nobel Prize in Physiology or Medicine goes to Yoshinori Ohsumi of Japan for his discoveries of mechanisms of whats known as autophagy. Break the word down and you get auto and phagy: from the Greek for self, auto, and eating, phagein. So, se
2016年Scientific American(十)月
Leave it on the shelf too long and honey begins to crystallize. Heating the honey returns it to its original condition, but if you add water, you could ruin the honey completely. Thats because honey, which is a preservative in its original state, fer
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