Measuring hydrothermal fluid temperature among acid gases in active chimneys. / Puri López-García
Microbial cells (on the left) can be easily confounded with silica-rich mineral precipitates (on the right). / Puri López-García
Colourful hyperacid and hypersline hydrothermal ponds at the geothermal field of Dallol. / Puri López-García
Living beings, especially microorganisms, have a surprising ability to adapt to the most extreme environments on our planet, but there are still places where they cannot live. European researchers have confirmed the absence of microbial life in hot, saline, hyperacid ponds in the Dallol geothermal field in Ethiopia.