Hundreds of people have gathered outside the Senedd in Cardiff Bay to protest about so called 'fracking'.
The controversial method of extracting oil or gas from rock. Today's protest was part of a worldwide campaign which wants to ban the process.
Nicola Hendy reports.
An anti-fracking demonstration is taking place outside of the Senedd, as part of co-ordinated anti-fracking protests around the world.
Environmental groups Friends of the Earth Cymru and Frack Free Wales are organising the event.
In a statement, a Welsh Government spokesperson said:
An anti-fracking demonstration is to take place outside the Senedd later as part of co-ordinated anti-fracking protests around the world.
Environmental groups Friends of the Earth Cymru and Frack Free Wales are organising the event in the Welsh capital, which will get underway from midday.
Friends of the Earth Cymru are holding an event in Cardiff encouraging people to show opposition to so-called 'fracking' in Wales.
It's one of 18 events taking place all over Wales.
The organisation says more than a million people in Wales live in areas at risk from the process used to exploit gas and oilf rom shale rock.
'Fracking' involves drilling down before fracturing layers of rock using a pressurised liquid.
A report last month says shale gas represents an opportunity for Wales, but that it must not come at the expense of Wales's natural environment.
Anti-fracking street stalls and events are taking place across Wales today, with thousands of people expected to join environmental groups demanding that the Welsh Government bans the drilling process.
Friends of the Earth say over a million people in Wales live in areas at risk from the process used to extract shale gas.
They say more should be done to cut energy waste and develop Wales' potential to find cleaner energy sources.
However, The Welsh Government say appropriate safeguards are in place to protect the environment in regards to dealing with natural gas and minerals.
The designer, Dame Vivienne Westwood, is attending an event in Swansea later today called 'We need to talk about fracking.' It's part of a nationwide tour following on from an open letter printed in the Times and signed by over 150 celebrities and scientists calling for more debate on fracking.
There are reserves of shale gas in parts of south Wales and licences for exploratory drilling have already been granted by several councils. The UK government supports the extraction saying it could reduce energy bills and create thousands of jobs.
Fracking - short for "hydraulic fracturing" - involves drilling deep underground and releasing a high-pressure mix of water, sand and chemicals to crack rocks and release gas stored inside.
Environmentalists fear it can cause small earth tremors, water contamination and environmental damage.
Three applications to test drill for gas have been approved by Vale of Glamorgan Council's planning committee.
Bridgend company Coastal Oil and Gas Ltd wants to carry out exploratory tests at three sites at Llandow, Llantrithyd, and near Dyffryn.
The test drilling could then lead to the process of hydraulic fracturing - or fracking - where water, sand and chemicals are pumped into a well to split the rock, and release gas.
Campaigners have raised fears about water contamination, and say even exploratory drilling will damage the countryside with excess noise and traffic.
Supporters say fracking could provide vital affordable energy.
Cliff Patten, Planning Consultant for Coastal Oil and Gas Ltd - whose applications to test drill for gas are being considered by Vale of Glamorgan Council this evening - says the company has drilled six boreholes in South Wales "without any major incidents."
He told our Correspondent Carole Green "this is a fairly ordinary application - hundreds of these have been drilled" throughout the UK.
Anti-fracking campaigners in the Vale Of Glamorgan are tonight demonstrating in Barry, to demand that councillors turn down plans to test drill at three sites.
The Brigend company Coastal Oil and Gas Ltd wants to carry out exploratory tests at locations including Llandow and Llantrithyd. It also has plans to test drill near Llantrisant.
The protest group Villages Against Drilling says exploratory drilling for gas will spoil the countryside, but those in favour dismiss the environmental concerns, saying test drilling is a step on the road to fracking which in turn could provide vital affordable energy.