Water Conservation and Stewardship

Water Scarcity Atlas

The Global Water Scarcity Atlas provides an introduction to water scarcity and showcases analyses that cover the whole world, based on cutting-edge research. Water scarcity means there is not enough water to go around. There is a need to reduce demand or increase supply – or someone loses out. Whatever happens, when water scarcity hits, the world cannot stay the same. https://waterscarcityatlas.org


How Coca-Cola Is Committing to Sustainability By Reducing Water Usage

The Coca-Cola Company is keeping our sustainability promise with our water stewardship efforts, focusing on the areas where we can have the greatest impact: Replenishing water we use in our finished beverages across communities and watersheds; Improving wateruse efficiency and reuse in our bottling plants; Helping manage water resources in our agricultural ingredient supply chain. Since 2015, The Coca-Cola Company has replenished 100% of the water we use in our beverages, returning it to nature and communities. https://bit.ly/2CO9NUY



Human urine bricks invented by South African students

They combined urine with sand and bacteria in a process that allows the bricks to solidify at room temperature. “It’s essentially the same way that coral is made in the ocean,” Dyllon Randall, their supervisor at the University of Cape Town, told the BBC. Normal bricks need to be baked in high-temperature kilns that produce large amounts of carbon dioxide. The engineering students at the University of Cape Town (UCT) have been harvesting urine from men’s toilets. After first making a solid fertiliser, the leftover liquid is then used in a biological process “to grow” what the university calls “bio-bricks”. The process is called microbial carbonate precipitation. The bacteria produces an enzyme that breaks down urea in the urine, forming calcium carbonate, which then binds the sand into rock hard, grey bricks. A “bio-brick” needs between 25 litres and 30 litres to grow – this may sound a lot, but most of this urine is also used to produce about 1kg of fertiliser So to make one urine brick, you’d need to go to the loo about 100 times.



The Seafloor Is Dissolving Because of Climate Change

According to a new study, ocean acidification is setting off a dangerous feedback loop that’s dissolving the very bottom of the ocean. According to a study published this week in PNAS , this sets off a feedback loop that acidifies the ocean even more quickly, a process that is already killing off foundational marine life species such as coral and threatening the balance of all ocean ecosystems on which we depend. “Our study confirms that humans are now a geological force capable of impacting the Earth’s system, like a super-volcano or a meteoritic impact,” Olivier Sulpis, an earth science researcher at McGill University and lead author on the study, said to Motherboard in an email. According to Sulpis, calcium carbonate is still dissolving carbon dioxide in the water, which means there is still a chemical force fighting against ocean acidification. But the rate at which we’re emitting carbon dioxide, which then gets absorbed by the ocean, is far greater and faster than the rate at which carbon dioxide gets taken up by calcium carbonate on the ocean floor. Just how bad is the damage? According to the study, in the northwest Atlantic Ocean, adjacent to Europe, 40 to 100 percent of the seafloor has been dissolved at the most severe locations. Supis told Motherboard in an email that the dissolution is worst in the northwest Atlantic because the ocean currents corral human-made carbon dioxide to the region in massive quantities. The more carbon dioxide, the more difficult it is for calcium carbonate to react and dissolve the molecule. https://bit.ly/2yRIaaB