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Sign Me UpBy signing up you agree to our Terms of Use and Privacy Policy.decades of successful -- and at times unsuccessful -- bear management in Yellowstone show how it can be done.

citing public safety concerns.This is especially the case during the first decade.A spokesperson for the commissioners said none were available for comment.

He may have been swayed by the expanse and wildness of the North Cascades region.But although these woodlands in Washington State were also once rich in grizzly bears.

Recovering a fallen icon of the American West is bold.

the park hasnt confirmed spotting any in years.Mashable Light SpeedWant more space and science stories in your inbox?Sign up for Mashables weekly Light Speed newsletter.

relatedPlaylistVideos:[]}; data.with new whales developing new songs.

thumbnail_url:https:\/\/zmgvideos.Credit: UIG via Getty ImagesThe researchers also suggested that the bowheads impressive song diversity could be due to an expanding population.