The latest news on Arctic
Vessel can hold 500 people annually, operate for 300 days per year for at least 30 years.
Potential impacts include dead zones, acidification, shifts at the base of the ocean's food chain.
Until recent years, fires on the Arctic tundra were rare.
Wildfires are transforming the Alaskan tundra and may be an accelerant to climate change.
Animals living closest to the North Pole seem to be disappearing.
Sediments had been thought to be capped by subsea permafrost.
The aircraft was the first ever taken to Antarctica, in 1912.
There is increased evidence that the Arctic could face seasonally ice-free conditions.
The northern coastline of Alaska is eroding by up to one-third the length of a football field annually.
Global warming, climate change, UN, greenhouse gases, melting glaciers, melting polar caps, environment, copenhagen, cop15, united nations