Seized by a sense of urgency, Obama bans oil drilling in large parts of Arctic, Atlantic
Canada also imposed a five-year ban on new licensing in all Arctic waters
Denmark stakes claim over North Pole and a large chunk of the Arctic
Seeks formal recognition of its extended territory from UN
Methane emissions from oil, gas rigs may be 50% more than estimated
This finding by researchers led by scientists from Princeton University challenges the accuracy of methane emission estimation processes