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Research has often focused on the role of deep-sea hydrothermal vents – those towering structures on the ocean floor constantly pumping out a melange of organic and inorganic material.These same minerals are also found in hot springs today, such as the Grand Prismatic Spring in Yellowstone National Park in the United States. Hot springs are bodies of groundwater heated by volcanic activity beneath Earth's surface.
We can find proteins with these iron-sulfur clusters in all forms of life. In fact, researchers propose they date back to the Last Universal Common Ancestor – an ancient ancestral cell from which Our newly published research expands on this knowledge by investigating the chemical activity of iron sulfides in ancient land-based hot springs which have similar geochemistry to deep-sea vents.We custom-built a small chamber that would allow us to simulate hot spring environments on early Earth.
Hot springs have similar chemistry as deep-sea hyrdothermal vents, such as this one on the Juan de Fuca Ridge off the coast of North America. (Additional experiments and theoretical calculations revealed that the production of methanol occurred through a mechanism called a reverse water-gas shift.
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