Tag #Deep Biosphere

What is the primary global implication of discovering comparable or greater microbial diversity in Earth's subsurface compared to its surface?

An eight-year international study published in Science Advances reveals that microbial diversity in Earth's subsurface is comparable or exceeds that of the surface, challenging the assumption that life abundance decreases with depth. Researchers analyzed over 1,400 microbiome datasets from 50 locations, finding surprisingly high microbial cell counts even at depths of 491 meters below the seabed and 4,375 meters underground. This subsurface life, with some cells dividing once per millennium, thrives on limited energy sources like hydrogen, methane, and sulfur.