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Climate change and the Arctic

· Issue or flashpoint

Widely agreedMost analysts agree.

Global warming, fastest in the Arctic, is melting ice, raising seas and opening northern waters to shipping, resources and rivalry.

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The picture

The planet is about 1.3°C warmer than pre-industrial times on long-term average; 2024 was the first calendar year above 1.5°C. The Arctic is warming about four times faster, and late-summer sea ice has shrunk roughly 40% since 1979, opening routes along Russia's coast and through Canada's islands. Melting Greenland ice adds to sea-level rise, now over 4 mm a year. Seven of the eight Arctic states are in NATO; Russia, the eighth, holds about half the Arctic coastline.

Why it matters

It raises disaster costs and migration pressure in low-lying countries, and turns the Arctic into a contested zone for sea lanes, minerals and military bases.

Key facts and numbers

World Meteorological Organization and NASA temperature records, US National Snow and Ice Data Center satellite sea-ice data since 1979, and IPCC assessment reports.

What to watch

Outlook: how fast warming and ice loss continue as major emitters' policies shift; the US left the Paris Agreement in January 2026.

Connections (3)

▸Greenland and the US push for control is central to Climate change and the ArcticWidely agreed

The relationship

Warming is thinning Arctic ice, making Greenland's minerals and nearby sea lanes easier to reach and raising its strategic value between North America, Europe and Russia. That feeds US interest beyond its Pituffik Space Base and missile-warning radar. Greenland's ice sheet, losing mass every year, would raise global seas about 7 meters if it fully melted.

Since when and why

Greenland, between the Arctic Ocean and North Atlantic; Pituffik in the northwest; and the Greenland–Iceland–UK gap, where NATO tracks Russian submarines.

How solid?

Widely agreed: NASA's GRACE satellites measure the ice loss, and US defense strategies and Trump's own statements cite Arctic security and minerals as motives.

What to watch

Debated: whether the climate opening matters as much as officials say; Greenland's rare-earth deposits remain costly to mine, and most Arctic shipping is still seasonal.

▸Bangladesh is highly exposed to Climate change and the ArcticWidely agreed

The relationship

Most of Bangladesh is a low delta of the Ganges, Brahmaputra and Meghna rivers. Rising seas, fed partly by melting Greenland and Antarctic ice, push saltwater into farmland, while cyclones and floods displace millions. Studies suggest a one-meter rise could flood roughly a sixth of its land, home to millions of people.

Since when and why

The coastal belt and Sundarbans mangroves; Cyclone Sidr in 2007 killed about 3,400 people (estimates vary); floods in August 2024 affected about 5 million.

How solid?

Widely agreed: IPCC reports, World Bank climate studies and Bangladesh disaster data; land sinking and shifting rivers complicate the projections.

What to watch

How many people will move (estimates of internal climate migrants by 2050 range from about 13 to 20 million), and whether embankments and adaptation keep pace.

▸Climate change and the Arctic opens Arctic sea routes along RussiaWidely agreed

The relationship

The Arctic is warming nearly four times faster than the global average, thinning sea ice along Russia's northern coast. That lengthens the shipping season on the Northern Sea Route, which can cut Asia–Europe voyages by roughly a third versus Suez. Russia controls access, runs the world's only nuclear icebreaker fleet and ships Arctic LNG and oil to Asia.

Since when and why

Russia's Arctic coast from Murmansk to the Bering Strait; traffic is mostly Russian energy cargo, with growing Chinese transits, including the first Arctic container express from China to western Europe in 2025.

How solid?

Satellite sea-ice records (NSIDC), peer-reviewed Arctic warming studies, and Russian Northern Sea Route traffic statistics.

What to watch

How soon the route works year-round, whether sanctions and insurance costs limit it, and the dispute over Russia's claim to regulate it as internal waters.