Beginning in the 1960s, a small band of young scientists headed out into the wilderness, driven by an insatiable curiosity about how nature works. Immersed in some of the most remote and spectacular places on Earth - from the majestic Serengeti to the Amazon jungle; from the Arctic Ocean to Pacific tide pools - they discovered a single set of rules that govern all life.
Biosphere 2, a massive greenhouse in Oracle, Arizona, features diverse ecosystems including a rainforest, ocean, and mangrove wetland, designed to test self-sustaining habitats for humans.
Researchers can extract ancient DNA from a variety of sources, such as human remains and environmental samples, revealing extensive ecosystems and organisms that existed for millennia.