What if all the sea water became fresh water?
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Where do you go to quench your thirst? The kitchen sink? The local bar? The mineral-rich springs of Bergamo, Italy? In the 21st century, you don’t have to go that far for fresh water. But still, supply is running out. What if we didn’t have to worry about water consumption? What If investigates.
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Water covers over 70% of the Earth, cycling from the oceans and rivers to the clouds and back again. It even makes up about 60% of our bodies. But in the rest of the solar system, liquid water is almost impossible to find. So how did our planet end up with so much of this substance? And where did it come from? Zachary Metz outlines the ancient origins of water on Earth.
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