Bricks made from human urine

[agies]

@Avyctes

The urine part is interesting but this is the real winner.

@pesco

By volume, urine accounts for less than 1% of domestic waste water, but it contains 80% of the nitrogen, 56% of the phosphorus and 63% of the potassium found in waste water.

Nutrient pollution is a real problem. The urine part is more than just interesting, it’s pretty damn important.