How Urea and Nickel Held Back Earth's Oxygen Revolution

October 13, 2025 Universe Today

How Urea and Nickel Held Back Earth's Oxygen Revolution
By Mark Thompson (https://ift.tt/fGBYZm4)

Earth's atmosphere from space, showing a blue layer at the stratosphere, above the clouds of the troposphere. The Moon is visible as a crescent in the background (Credit : NASA Earth Observatory)

When I spotted a headline about Earth's ancient oceans and urea, my brain immediately went to the obvious place. Urea, the same compound found in urine. Yes, scientists are telling us that a component of wee played a crucial role in one of the most important events in our planet's history. Sometimes science really does have a sense of humour.

October 14, 2025 at 01:51AM
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