The most extreme life on the planet. Part one: life in volcanos.

Swift Science

Yellowstone National Park, with each ring of colour due to a different microorganism.

For all its beauty, Yellowstone National Park is a terrifying place. If it erupted tomorrow, most of America would be drowned in ash, and they wouldn’t see sunlight for weeks. Add extreme pressures, no nutrients and oxygen depletion to the searing heat in volcanic pools and you can understand why we used to think life here was impossible.

However, those amazing dashes of red, green and yellows sweeping across the volcanic pools are not from the rocks but from microbial life which aren’t just tolerating the scorching heat, but need it to survive.

Apart from being a liiitle bit painful, if I jumped in the pool and tried to survive, my cell membranes would crumble, my enzymes and proteins would melt and my DNA simply unravel and fall apart. How is it then, that at 115°C we…

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