cow dung

In addition to using it as fertilizer, researchers are using cow dung to filter seawater into pure fresh water.

The life of the Mundari clan in South Sudan completely revolves around their herd of cows. They make use of all products from this animal, including urine and feces.

The water is more nutritious than regular water, scientists said.

These genes come from cows' intestinal bacteria and, according to experts, are likely to infect the food and harm people.