HOT ISSUE: Should we deliberately move species? (AP)

FILE - In this Feb. 15, 2000 file photo, a  giant Sitka spruce stands tall near Seaside, Ore., Feb. 15, 2000.  Researchers will uproot moisture-loving Sitka spruce and Western redcedar that grace British Columbia's coastal rainforests and drop their seedlings in the dry ponderosa pine forests of Idaho. Scientist are planting trees that don't certain climates in a bold experiment to move trees threatened by global warming into places where they may thrive amid a changing climate. (AP Photo/Jeff Barnard)AP - On naked patches of land in western Canada and United States, scientists are planting trees that don’t belong there. It’s a bold experiment to move trees threatened by global warming into places where they may thrive amid a changing climate.

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