BBC: A scientist and an award winning poet, both at the University of Sheffield, have made a giant poster that uses nanotechnology to gobble up pollution.
It can absorb the poisonous compounds from around 20 cars each day if you put it by a busy road.
Prof Tony Ryan (the science expert) and Prof Simon Armitage (the words expert) came up with the idea to highlight one possible way to cut disease and save lives by taking poisonous compounds from the air in our towns and cities.
First the science...