By THAYER WALKER
In 2005, two Silicon Valley engineers, Joe Rizzi and Roger Hine, began building a device that would allow them to listen to the calls of humpback whales off the coast of Mr. Rizzi
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/wave-powered-monitor-moving-beyond-listening-whales
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/asian-age-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/whales
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/scientific-and-technical-development