“The widely accepted idea that animal life evolved out of the oceans before moving onto land is being challenged by a geologist who says the oceans were too salty and hot for that to have happened. […] The combination of salinity and hot temperature and high temperature would have kept oxygen levels too low to support marine animals, [Paul] Knauth [of Arizona State University in Tempe] says. He points out that the warmer and more saline water is the less oxygen dissolves in it.”