The greening of the North: climate change shrinking tundra, says study

"Imagine the vast, empty tundra in Alaska and Canada giving way to trees, shrubs and plants typical of more southerly climates," says a summary of the study published by scientists from the University of Nebraska, the Korean Polar Research Institute and Seoul National University. "Imagine similar changes in large parts of Eastern Europe, northern Asia and Scandinavia, as needle-leaf and broadleaf forests push northward into areas once unable to support them."
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"Increasing growth of trees may encroach on the habitat for many birds, reindeer and other locally beneficial species . . . thus adversely affecting local residents," she said.