At the end of August, a wisp of flame suddenly appeared in the Arctic twilight over the Barents Sea, bathing the low clouds over the Norwegian port of Hammerfest in a spectral orange glow. With a tremendous roar, the flame bloomed over the windswept ocean and craggy gray rocks, competing for an instant with the Arctic summer's never-setting sun. The first flare-off of natural gas from the Snohvit (Snow White in Norwegian) gas field, some 90 miles (145 km) offshore, was a beacon of promise: After 25 years of false starts, planning and construction, the first Arctic industrial oil-and-gas operation outside of Alaska was up and running. Norway's state-owned petroleum firm Statoil could finally exploit once unreachable reserves, expected to deliver an estimated $1.4 billion worth of liquefied natural gas each year for the next 25 years. But in a place where the aurora borealis normally provides celestial beauty, Snow White's luminous apparition also signals caution. What will a new era of exploitation bring to the Arctic, one of the earth's last great uncharted regions? The vast area has long fascinated explorers, but it has just as long been the site of folly and exaggerated expectations. Over centuries, hundreds died in the doomed search for an ice-free Northwest Passage between Asia and Europe, many of them victims of ill-fated stabs at national and personal glory. This summer, however, saw something new: for the first time in recorded history, the Northwest Passage was ice-free all the way from the Pacific to the Atlantic. The Arctic ice cap's loss through melting this year was 10 times the recent annual average, amounting to an area greater than that of Texas and New Mexico combined. The Arctic has never been immune from politics; during the Cold War, U.S. and Soviet submarines navigated its frigid waters. But now that global warming has rendered the Arctic more accessible than ever