Water heaters' methane leaks are high, but fixable

Natural gas escapes from water heating systems through leaks and because some is not combusted by the burner. These tiny inefficiencies can add up: The resulting emissions of methane—a powerful greenhouse gas—for water ...

How much is a clam worth to a coastal community?

Researchers have developed a method to estimate the value of oyster and clam aquaculture to nitrogen reduction in a coastal community. Nitrogen is a nutrient that comes from many different sources, including agriculture, ...

Lake sediments show decades of coal ash contamination

An analysis of sediments from five North Carolina lakes near coal-burning power plants has found that coal ash pollution of surface waters has been more persistent and widespread than was previously known.

page 10 from 40