Fracking

Fracking

Classroom Activity Page: Hydraulic fracturing, or fracking, is a high-pressure technique for cracking rocks and More »

Fracking fracas

Fracking fracas

A high-pressure rock-buster caused natural gas production to explode. How does fracking work? What’s up with groundwater pollution? More »

Trash: Does burning beat burying?

Trash: Does burning beat burying?

Twenty-five years ago, trash incinerators were a major source of air pollution. In Europe today, cleaner incinerators are common and More »

Mercury Pollution: How to Respond

How should we deal with mercury air pollution in air, fish and water? Why do the studies of mercury consumption not agree? What to do More »

Oil Spill: New Concern

Marine iguana in the Galapagos islands are suffering from trace amounts of oil left by a tanker accident. More »