Climate change: Alaskan wilderness opens up for oil exploration The giant Alaskan wilderness is home to many important species, including polar bears, caribou and wolves. Decades of disputeol on the rights to drill for oil on about 5%. Covering some 19 million acres (78,000 sq km) the Arctic National Wildlife Refuge is often described as America's last great wilderness. It is a critically important location for many species, including polar bears. In the winter months, pregnant bears build dens in which to give birth, as temperatures have risen and sea ice has become thinner, these bears have started building their dens on land.The coastal plain of the ANWR now has the highest concentration of these dens in the state the refuge is also home to Porcupine caribou, one of the largest herds in the world, numbering around 200,000 animals. In the spring, the herd moves to the coastal plain region of the ANWR as it is their preferred calving ground. This same coastal plain is now the subj...
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