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- In the developing world, 1.8 million people, most of them children, die from diarrheal diseases and 88 percent of those diseases are caused by unsafe drinking water and inadequate sanitation and hygiene, according to the World Health Organization. In 2015, 663 million people around the world still don't have access to clean, safe drinking water, according to a report by WHO and UNICEF.
The Drinkable Book, still in development, is one potential answer. "We aim to make it superaffordable," says Dankovich. "We're hoping that each filter will be used for a few days, or a couple of weeks, and then replaced. There are a lot of filters out there, but they often require a pump or power." So far, field tests have shown that the book pages can filter out bacteria in local water supplies in Bangladesh, Ghana, Haiti and South Africa.