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