Read the full story in The Guardian.
Consumer electronics, including computers and mobiles, are leaving a legacy of toxic waste in countries including China and India. Recycling factories across Asia are recovering e-waste exported from around the world, but discharging heavy metals and chemicals into local water supplies in the process.
How to safeguard drinking water for local residents is an ongoing battle, with existing solutions such as chlorination, distillation, boiling and high-tech filtration prohibitively expensive and often reliant on fossil fuels.
Now a new filtering device, invented by a US teenager, could provide a cheap and easy way to purify water.