His CIA code name is Condor. In the next seventy-two hours almost everyone he trusts will try to kill him.

From a distance, Biosphere 2 emerges from the cacti and creosote of the Sonoran desert like a gleaming oasis, a colony of glass and bright white structures. Despite being just outside Tucson, Arizona, ...

For most organisms on Earth, rocks are objects, not food. But for one oddball microbe, desert limestone seems to have been on the menu. Whether or not this mysterious form of life still exists or went ...