Science, Space and Technology News 2024
New research from UC Riverside offers groundbreaking insights into Earth’s earliest life forms by combining ancient geological data with modern genetics and environmental studies, shedding light on their long-term evolutionary impact and relevance to climate change and space exploration.Despite years of extensive study, many aspects of the origins and early evolution of life remain a mystery to researchers.
The paper shows how Earth’s earliest life forms — microbes such as O2-producing bacteria and methane-producing archaea — shaped, and were shaped by, changes in the oceans, continents, and atmosphere. Bringing together experts in biology, geology, geochemistry, and genomics, the paper details the journey of Earth’s early life forms from their first appearances to their rise to ecological prominence. As their numbers increased, microbes began to affect the world around them, for instance by starting to produce oxygen viaThe findings across each field often “agree in remarkable ways,” according to Tino, who is now a postdoctoral associate at the University of Calgary.
“In essence, we are describing Earth’s first flirtations with microbes capable of changing the global environment,” said Lyons, who is also the director of the Alternative Earths Astrobiology Center in the Department of Earth and Planetary Sciences. “You need to understand the whole picture to fully grasp the who, what, when, and where as microbes graduated from mere existence to having a significant effect on the environment.
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