Wildfires burning in Canada continue to bring smoke south into the U.S with air quality alerts in effect across the Midwest and upper Great Lakes.

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Earth in Danger Zone in Nearly All Ecological Ways, Study Says
Earth has pushed past seven out of eight scientifically established safety limits and into “the danger zone,” not just for an overheating planet that's losing its natural areas, but for the well-being of people living on it, according to a new study.
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