Earth's Early Ocean Cooled More Than A Billion Years Earlier Than Thought

The global ocean covering the Earth 3.4 billion years ago was far cooler than has been thought, according to researchers who analyzed isotope ratios in rocks formed on that ancient ocean floor. Instead of a hot primordial soup, much more tepid temperatures prevailed. Cooler temperatures may have had effects on the evolution of the early atmosphere and could have opened the door to an earlier spread of photosynthetic life forms across the planet.

Read the whole article on Science Daily

More from Science Daily