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Polar Thaw: Global Warming in the Arctic and Antarctic
Photographs from 'World View of Global Warming' by Gary Braasch
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A growing population of spruce bark beetles has killed nearly 4 million acres of mature white spruce forest. Scientists believe that because of higher temperatures, more beetle larvae are able to survive, and the insects can mature faster, completing a two-year life cycle in just one year. The trees, which previously lived in balance with the beetles, do not have enough natural defenses to withstand this assault. Back to introduction | Previous page | Next page All photos © Gary Braasch | ||||||
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