Everyone is familiar with the light dome that shows from afar where cities are brightly lit at night. Artificial light that is scattered in the atmosphere and brightens the night sky can have an ...

Across Texas, wastewater systems fail, releasing raw or partially treated sewage into streams, beaches and groundwater. Heavy ...

A large natural experiment in Catalonia shows that moving to areas with higher levels of air pollution is associated with weight gain in young children. The study, led by the Barcelona Institute for ...