Paris can be a glorious city, but sometimes the streets reek of urine from pippi savage (wild peeing). Now a team of entrepreneurs has developed a clever solution to this urban menace. The Uritrottoir (the name combines the words for urinal and pavement) is designed to look like a planter and it turns human urine and straw into compost for public parks. This seems like a great idea for many other cities with the same public urination problem, but where is the female version?