Fracking may have caused South Korean earthquake –study

Researchers analysed data from November quake and found main shock occurred near fracking site

One of South Korea's largest earthquakes on record may have been caused by hydraulic fracturing - or fracking - according to a study published on Friday in the journal Science.

A magnitude-5.5 earthquake hit the south-eastern city of Pohang on 15 November, injuring at least 70 people, temporarily displacing hundreds, and causing millions of dollars of damage. In the aftermath, residents and researchers have questioned whether the quake could be connected to a geothermal plant - the country's first - less than 2km (about 1 mile) away.