Autonomous airboats monitor hippo dung in Kenya's Mara River basin

Small, autonomous airboats, disguised to look like crocodiles, helped scientists measure water quality this spring in Kenya's Mara River. An estimated 4,000 hippos use the river as a toilet with potentially deadly effects for fish living downriver.

Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/Q...