Fracking

DEFINITION: A drilling technique which sees liquid pumped deep underground at high pressure to fracture rock and release oil or gas. Opponents claim that the process can contaminate water, cause earthquakes and exacerbate noise and traffic pollution.

See also: Shale gas

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During the industrial era, Wales was home to the three largest coal exporting ports in the world

Wales pledges to phase-out fossil fuels in favour of renewables

The Welsh Government has committed to phase out the continued extraction and use of fossil fuels, including those obtained by fracking, as it strives to reduce national carbon emissions by 80% by 2050, against a 2011 baseline.

Fifty years of nuclear power in the UK has generated 750,000 cubic metres of waste but the nation has still not developed a permanent disposal solution

Allow nuclear waste disposal under national parks, say MPs

Highly radioactive nuclear waste could be permanently buried under national parks and areas of outstanding natural beauty (AONBs), under government plans backed by a committee of MPs.