Ultraviolet (UV) technology has been marketed as a purifier to disinfect contaminated drinking water for many years. Low pressure mercury lamps have a very strong UV emission at 254 nanometers.
Forfeiting our commons
The Lancet’s Series on Maternal and Child Undernutrition
President Obama's grand climate plan does not add up
Climate change can no longer be ignored
NGO demands withdrawal of Niyamgiri gram sabha notificatio
