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They are home to wolves, elks and tigers: the boreal forests of the north. They store more carbon than all the rainforests put together and, as such, are crucial for the world’s climate. Where permanently frozen ground is mostly covered in metre-high snow, and summer is dominated by drought, conifers and ground-cover plants are accustomed to fire. Some plants even need the flam...。David Petersen is passing through the Colorado Rockies. After saving a young diner waitress from her violent ex-husband during a break from driving, he hits the road again alone through a dangerous snow blizzard. One false move behind the wheel has him waking up inside a ravine, in the eye of the storm. But the cold is the least of his worries when a beast starts prowling outsi...。