在埃塞俄比亚的极热酸池中，科学家探寻生命的极限
Deep in the Danakil Depression of northern Ethiopia lies one of the most unwelcoming places on Earth. The Dallol hydrothermal field is a surreal landscape of steaming vents, neon‑green acid ponds and salt towers that crackle under the sun. Daytime temperatures regularly climb above 45°C, and the groundwater is ten times saltier than seawater. Yet, remarkably, life has found a way to flourish right here, in pools so corrosive they can dissolve a metal spoon in minutes.
What makes Dallol truly extraordinary is the combination of extremes. The water bubbling up from deep magma chambers carries a sharp cocktail of sulphur, iron and copper, resulting in a negative pH value—something almost unheard‑of in nature. At the same time, the brine can reach a blistering 108°C at the vents. For decades, scientists assumed nothing could survive such a chemical assault, but advances in gene‑sequencing technology have revealed a hidden world of “polyextremophiles,” organisms that laugh at what would kill most life in seconds.
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