Onions Made Pre-Human Ancestors Cry Too, Study Suggests
LiveScience.com livescience Stafflivescience.com – Fri Mar 19, 4:43 pm ET
The sensors in your body that make you tear up when you're cutting onions have been around for 500 million years, a new study finds.
http://news.yahoo.com/s/livescience/20100319/sc_livescience/onionsmadeprehumanancestorscrytoostudysuggests
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