Eleven minor earthquakes shook central Oklahoma over the weekend, renewing speculation that the area’s oil and gas drilling boom - fueled by controversial hydraulic fracturing, or fracking - is to blame for an increase in seismic activity.
Just four wastewater wells in Oklahoma – where energy companies dump water after completing the hydraulic fracturing process – have caused scores of earthquakes this year, some 30 km from the site, according to a new study by top US universities.
Greenpeace has denied a NATO claim that Russia is secretly working with EU environmental groups to oppose fracking. NATO secretary-general Anders Fogh Rasmussen has alleged Russia is trying to promote dependence on its gas exports through sabotage.
A swarm of identical earthquakes has hit Alaska – taking place in the same low-seismicity area in the northwest, all at the same 5.7 magnitude. The fifth and latest event took place on Monday, leaving scientists puzzled.
TEPCO, the company in charge of the damaged Fukushima nuclear power plant, cannot filter a dangerous radioactive isotope out of about 400,000 metric tons of water before returning it to the sea, and has contracted with a US company for a second system.