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For the first 2 billion years of Earth’s history, there was barely any oxygen in the air. While some microbes were photosynthesizing by the latter part of this period, oxygen had not yet accumulated a...
Selenium may support deep microbial life in Earth's continental crust
microbial earthcrust Se ecological system
2021/8/5
International drilling efforts over the last decades into the seafloor have provided increasing evidence for the existence of an extensive deep biosphere below the seafloor. There, circulating fluids ...
Without oxygen, Earth's early microbes relied on arsenic to sustain life（图）
Without oxygen Earth early microbes relied arsenic sustain life
2020/10/16
Much of life on Earth today relies on oxygen to exist, but before oxygen was present on our planet, lifeforms likely used arsenic. The findings of the U.S. National Science Foundation-funded rese...