This week this image has been widely circulated on the Internet. Taken by Jack Cook of the Woods Hole Oceanographic Institution, it brings to light the scarcity of water on our planet.
Water, which normally covers more than 70% of the Earth’s surface, often gives the impression of being unlimited. Once assembled, this vital resource is equivalent to a sphere with a diameter of only 1,385km (0.023% of the Earth’s total mass). Freshwater (2nd smallest bubble) represents around 35 million km3. Finally, the tiny blue spot, of less than 60km in diameter, contains all the freshwater easily accessible for life on earth. In other words, a miniscule amount.
(Credits : Jack Cook, Woods Hole Oceanographic Institution)