Now We Know Just How Sharks Follow Their Nose to Dinner |... http://www1.voanews.com/learningenglish/home/Now-We-Know-Just-How-Sharks-Follow-Their-N... Also: A study finds that people have the highest stress levels in their early 20s and get happier after 50 | SCIENCE IN THE NEWS alenka-spb-777 | | 0 | 500 | 0
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