The “Deep Biosphere” Cesium globe presents an insight into the extreme conditions that life has adapted to on Earth. Based on the findings of researchers from the Deep Carbon Observatory, the temperature limit for life has been demonstrated to be ~120°C. Based on this, and combined with Earth’s topography (ETOPO1; Amante et al. 2009) and expected geotherms in continental and oceanic crust (Hamza et al., 2008), Robert Pockalny has developed iso-surfaces that represent this descent in depth towards the limit of biological processes. The globe is also superimposed with a database (including many sites from Magnabosco et al., 2018) of points (black circles on continents, and white triangles over oceanic crust) of sample locations that document the biological material that was collected.
Follow these links for more information about the “Deep Biosphere”: