From lead in the soil to toxins in the water and radioactive fallout in the air, The Blacksmith Institute has created a list of the world's worst ecological disaster areas
Here is our guide to some of the planet's best ideas, with an assessment of their impact and feel-good factor
It's a Top 10 list no city wants to be on. But the group behind it aims to make sure that world's worst ecological disaster areas are no longer among its most forgotten