How much water is available on Earth? A surprisingly small amount. This visual from the Woods Hole Oceanographic Institute really brings that home.
If all the water on the planet were gathered into a ball, the radius would be only 700 km (420 miles). The amount of freshwater available is even less than that.
Illustration by Jack Cook, Woods Hole Oceanographic Institution, Howard Perlman, USGS
You must be logged in to post a comment.