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 Breaks September Heat Record, May Reach Warmest Year
US Scientists calculate that Earth hit its warmest September on record last month. The National Oceanic and Atmospheric Administration Wednesday said there's nearly a two-to-one chance that 2020 will end up as the hottest year on record.
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