This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at http://ted.com/ted

Marino Morikawa revived and recovered El Cascajo wetlands. Polluted by neglect, livestock and waste pipes, the wetlands had changed beyond recognition from when Marino Morikawa used to visit as a child. When he heard about the dire situation of El Cascajo, Morikawa left Japan and went back to Peru to start a clean-up campaign using biofilters and nano bubbles. Today, he continues working to save other natural habitats such as rivers and lakes.