You could see the northern lights across most of Canada tonight, including in southern Ontario. Here's what you need to know ...

With 174 active wildfires burning across Canada, several U.S. states are under air quality alerts due to the traveling smoke ...

Early Sunday morning, G4 geomagnetic storm conditions had been reached. Such strong conditions have been known to bring the northern lights as far south as Alabama and northern California. However, ...

Wildfire smoke from Canada is expected to move over the U.S., and maps and satellite imagery show the large-scale impact of the blazes.

Smoke from Canadian wildfires could contribute to hazy skies and a "dim" sun for several states later this week.

To check your state's air quality, visit AirNow's website, and plug in your zip code, city or state. Here's what to know as of Wednesday, June 4. Parts of Wisconsin, Iowa, Illinois, Indiana and ...

U.S. Proposes Interim Step in Iran Nuclear Talks, Allowing Some Enrichment An outline by the U.S. would allow Iran to continue enriching uranium at low levels as a deal is worked out that would ...

Doubling the tariff is also likely to further upset countries that export metals, including Canada, the largest foreign supplier of steel and aluminum to the United States.

(The map below is updated on Fridays when the CDC releases its latest weekly numbers.) The last measles death in the U.S. before this year was in 2019, when a 37-year-old man died from measles ...

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