Tracking fracking pollution

As a result of the fracking revolution, North America has overtaken Saudi Arabia as the world's largest producer of oil and gas. This, despite endless protests from environmentalists. But does drilling for natural gas really cause pollution levels to skyrocket?

How shale fracking led to an Ohio town's first 100 earthquakes

Since records began in 1776, the people of Youngstown, Ohio had never experienced an earthquake. However, from January 2011, 109 tremors were recorded and new research in Geophysical Research-Solid Earth reveals how this may be the result of shale fracking.

Geothermal power slowly moves forward in the US

US authorities have approved another plan to develop and test a geothermal reservoir using enhanced geothermal system (EGS) technology.

Fracking linked to small earthquakes

Further evidence has emerged that injection wells associated with fracking cause minor earthquakes.

Fracking safe - within limits, says study

The controversial technique for shale gas production known as fracking won't contaminate water sources, say researchers - as long as there's a safe distance between the injection source and water supplies.

Wastewater injection causes sharp rise in earthquakes

A huge increase in the number of minor earthquakes across the middle of the US is almost certainly caused by wastewater injection from oil or gas drilling, including the controversial technique known as fracking.

Tighter regulation needed for fracking, says report

Hydraulic fracturing of shale formations, or fracking, to extract natural gas doesn't cause groundwater contamination, a new report has found.