There's a viral video being shared on Facebook of a Peruvian-Japanese scientist called Marino Morikawa, who used nanotechnology to clean up a polluted lake in a couple of weeks only. Morikawa used to go fishing as a child at that lake before it became heavily contaminated, so he used his degree in environmental science to figure out how to decontaminate it and it worked! Litani River has been polluted for years now by the tens…