DURBAN, South Africa — Get paid to pee. That’s the deal on offer in the South African city of Durban, where the city is looking to buy liquid waste to encourage residents to use dry toilets.
Aiming to improve hygiene and save money, the port city has installed in home gardens about 90,000 toilets that don’t [...]
Cooking and drinking water must be of good quality in order to ensure our health.
Ideally, drinking water must taste good, be clear and odorless, and contain the right amount of mineral salts. It should also be free of harmful substances, such as heavy metals, nitrates, or bacterial or viral agents which may pose an infection [...]
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