Prof. Bhaskar Sen Gupta heralds a new dawn in Arsenic removal in water supplies in Bangladesh

Technology developed by a professor at Heriot-Watt University in Edinburgh could help millions of people exposed to high levels of arsenic in their water supplies.

The world's first solar-powered, fully autonomous treatment plant has just opened in Bangladesh. It's already sharply reduced levels of the toxic chemical.

follow link to the full BBC news article