He begins by examining the water under a microscope but finds no visible impurities or microorganisms. To delve deeper, he takes the sample to a laboratory for professional testing. Image Credit ...

Credit: Aaron T. Mok, Tianyu Wang, Shitong Zhao, Kristine E. Kolkman, Danni Wu, Dimitre G Ouzounov, Changwoo Seo, Chunyan Wu, Joseph R. Fetcho, Chris Xu DEEPscope, an innovative microscope from ...