Researchers find that oxygenation of Earth’s surface is key to the evolution of large, complex multicellular organisms. If cells can access oxygen, they get a big metabolic benefit. However, when oxygen is scarce, it can’t diffuse very far into organisms, so there is an evolutionary incentive for multicellular organisms to be small to ensure most of their cells can still access oxygen.
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Did Earth’s early rise in oxygen help multicellular life evolve?
May 19, 2021By
Earth’s mantle, not its core, may have generated planet’s early magnetic field
March 16, 2020By
A trio of studies are the latest developments in a paradigm shift that could change how Earth history is understood. They support an assertion by a geophysicist that a once-liquid portion of the lower mantle, rather than the core, could have exceeded the thresholds needed to create Earth’s magnetic field during its early history.
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Unique Diamond Impurities Indicate Water Deep in Earth’s Mantle
January 2, 2019By
A UNLV scientist has discovered the first direct evidence that fluid water pockets may exist as far as 500 miles deep into the Earth’s mantle.
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Volcanoes tied to shifts in Earth’s climate over millions of years
April 22, 2016By
A new study reveals that volcanic activity associated with the plate-tectonic movement of continents may be responsible for climatic shifts from hot to cold over tens and hundreds of millions of years throughout much of Earth’s history.
Latest Science News — ScienceDaily
