From crossing a road to fracking for oil, everything has inherent risks. At best, we can only aim to agree that, on balance, they are contained and justified.
Shale gas holds considerable advantages. But there are still a number of uncertainties around whether South Africa is ready for such a bold step.
There's a debate over whether fracking should be introduced into Florida, a state with a unique geology and hydrology that introduces a long list of environmental concerns.
Fracking in the US has relied on chemicals linked to a range of health problems but the industry claims UK operations would be far safer.
Different states and countries with shale gas can benefit from the mistakes made by other regions that rushed into fracking. Here’s one state’s plan.
Fracking fluids in Marcellus shale have contaminated groundwater but new study finds that the source is likely from surface spills, not leaks from underground wells.