LifeStraw is a water filtration device developed in 2005 by Swiss corporation Vestergaard Frandsen. Inexpensive and easy to use, LifeStraw has become a major weapon in the battle against waterborne illness.
Read more:http://science.howstu
Read more:http://science.howstu
Cool Invention
ReplyDeleteelaborate it if u can
ReplyDeletesure i will :)
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