title: The biosphere below.
abstract: More than a mile below Earth's surface, tiny creatures thrive in searing heat and crushing pressure. Scientists think these microorganisms might teach us about the origins and evolution of early life.
authors.forename: D
authors.initials: D
authors.lastname: Grossman
authors.forename: S
authors.initials: S
authors.lastname: Shulman
mesh_terms: D000693:Anaerobiosis; D001105:Archaea; D001274:Atmospheric Pressure; D001407:Bacillus; D005075:Biological Evolution; D018534:Earth, Planet; D004783:Environmental Microbiology; D019419:Evolution, Planetary; D019015:Geologic Sediments / Q000382:microbiology*; D006358:Hot Temperature; D000069497:Origin of Life; D013048:Specimen Handling