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The late Paul Silver smiles from behind his desk at the Carnegie Institution for Science Broad Branch Road Campus. The Carnegie Institution for Science recently introduced a new named postdoctoral fellowship in his honor. Image courtesy of Carnegie Institution for Science.

Epi-fluorescence microscopy of acridine orange stained microorganisms collected from deep-sea vents at 2.5 km depth and cultured at high pressure conditions (250 atm). Continuous culturing experiments integrate vent fluid sampling techniques (Isobaric-Gas-Tight sampler, WHOI) with our high-pressure chemostat.