01:11
The Delicate Balance, Part 1: The Human Imprint
The last half century or so has seen the impact of human enterprise on the environment escalate beyond the collective impact of humans over the previous four billion years. Human endeavors have changed the composition of the atmosphere, changed the...
02:00
The Delicate Balance, Part 1: Technology is Not Always the Answer
The Biosphere 2 experiment attempted to create a human engineered self sustaining environmental system. The experiment served to illustrate how little is understood about the workings of our natural ecosystems services.