Net zero water: The why, what, and how

By Dr. Prashanth Suresh Kumar Water scarcity is a rising concern globally; but wait, how is global water shortage even a possibility? Is our planet running out of

water? Scientists are divided regarding the exact origin of Earth’s water. Did the Earth start as a dry planet and gain its water over millions of years through water-bearing

asteroids and comets, or did Earth already have the water from the nebular gas that aided in the formation of the solar system?  Regardless of which theory you choose,

the total amount of water on Earth has been constant for a fairly long time, at least since the time of dinosaurs – thanks to our planet’s incredible water cycle. Every year, a

significant amount of water evaporates from the earth’s surface, but the same amount returns in the form of precipitation like rain and snow. Therefore, the change in the mass of

water on Earth is (Net) Zero! In other words, our current planet is self-sufficient with its water requirements. Also ReadDid you know THIS Indian state ranks amongst New

York Times ‘List of 52 places to visit in 2023’ Why is there a scarcity of water? While the water recycling capacity of Earth is remarkable, the distribution of the

quantity and quality of water across the planet is not the same. Growing population and urbanisation, leading to overexploitation and pollution of water sources, have amplified

the scarcity of clean water. And if that was not putting enough stress on existing water supplies, the onset of climate change has complicated things even more.