Scotland's lochs and rivers: cleaning them up with human sewage

Description

They’re both fairly unappealing and just a bit whiffy: thick, toxic algal blooms that increasingly clog Scotland’s lochs and rivers and smelly mountains of sewage sludge.

But now researchers are looking into turning human waste from the sewage system into a mineral-rich material that could be used to both attack the scourge of algal blooms and help tackle another environmental headache.