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As Earth's climate warms, more pine trees are popping up in unusual places

Earth's global average temperature is rising but the rate of that warming is different in various regions of the world. Earlier this week, scientists revealed that the Arctic region may be warming four times faster than the rest of the planet. That warming is already having an effect on the ecosystem. Dr. Roman Dial is a professor of biology and mathematics at Alaska Pacific University in Anchorage. Dial's research focuses on the white pine tree population. He says these trees are steadily moving farther north into the barren tundra of northern Alaska.
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