Fresh water is the most important resource for human life on earth. People can survive far longer without food than without water, and virtually all of our food sources require fresh water to grow or create.
A massive freshwater sea has been discovered off the North East coast of the US, beneath the Atlantic Ocean no less.
In 2018, Cape Town, South Africa's second most populous city, came very close to running out of water as the multi-year "Day Zero" drought depleted its reservoirs.