Fracking plans spark oil and gas well warning
The UK must learn from leaks and poor monitoring at existing onshore oil and gas sites before any expansion of shale gas "fracking", scientists have warned.
A review of 2,152 wells drilled from 1902-2013 found up to 100 "orphaned" wells for which no firm is responsible.
The long-term stability of wells and the risk of pollution are key considerations if the coalition pushes ahead with plans to expand the shale gas industry.
John Moylan reports.