Part 2 of the TED Radio Hour episode To The Edge.

About Bill Stone’s TEDTalk

Bill Stone is a maverick cave explorer who has plumbed Earth’s deepest abysses. In this talk, he explains what it’s like to descend into the deepest caves in the complete darkness for days on end — and why he keeps doing it.

About Bill Stone

Engineer and daredevil caver Bill Stone pushes the frontier — through flooded tunnels, the remotest depths of the Earth and the limits of human endurance. He’s currently planning to mine moon ice by 2015 and build an autonomous robot to visit …read more

Source: NPR Science – ingested into KQED

Are Earth's Deepest Caves The Last Frontier? 26 July,2013KQED Science


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