A long-standing environmental liability may soon become a strategic industrial asset. Researchers in Denmark ...

Arsenic is a double-edged sword. It is a known carcinogen found naturally at high levels in groundwater. But it is also an element that is critical for clean energy technologies such as solar cells.

At the Pic du Midi mountain observatory it is raining from all directions – ideal for exploring the pathways of arsenic in the atmosphere. Left: Device for collecting aerosol samples at low ...