Post date: Mar 06, 2015 1:27:52 PM
A simple and effective solution to stop chainsaws by using old cell phones!
http://www.ted.com/talks/topher_white_what_can_save_the_rainforest_your_used_cell_phone
"The sounds of the rainforest include: the chirps of birds, the buzz of cicadas, the banter of gibbons. But in the background is the almost-always present sound of a chainsaw, from illegal loggers. Engineer Topher White shares a simple, scalable way to stop this brutal deforestation — that starts with your old cell phone."