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    Investigators reveal cause of Colorado's costliest wildfire

    01:20
  • Why the Canadian wildfire smoke turned the sky in NYC orange

    01:05
  • Hazardous smoke cloud creeps farther down East Coast

    03:38
  • Watch: Smoke from Canadian wildfires seen from the International Space Station

    01:03
  • Where the Canada wildfire smoke is headed next

    01:13
  • N.J. governor urges residents to ‘stay inside’ amid wildfire smoke

    01:55
  • Philadelphia travelers wear face masks amid poor air quality

    02:40
  • When could air quality across parts of the U.S. improve?

    03:23
  • Air quality and weather forecast for Thursday, June 8

    02:10
  • Canada's uncontrolled wildfires spread across the country

    01:03
  • New York City mayor urges residents to stay indoors due to 'hazardous' air quality

    00:54
  • How to better protect yourself from the health effects of wildfire smoke

    03:31
  • US skies filled with haze from Canada wildfires

    05:44
  • New York City afternoon skies get an orange tinge due to Canadian wildfires

    00:44
  • Parts of Florida under flood alert as Arlene brings heavy wind and rain

    01:32
  • Texas slammed with severe weather and tornadoes

    01:51
  • Western Texas slammed with severe flooding

    01:32
  • Air quality concerns rise in US amid Canadian wildfires

    02:00
  • Canadian wildfires prompt air quality advisories in US

    01:48
  • State Farm no longer accepting property insurance applications in California

    01:59

Winter Storms Across Nation Slows Holiday Travel for Millions

01:35

From California to Wisconsin — where players on the Minnesota Vikings NFL team were left stranded after the team’s plane skidded off an icy taxiway — the conditions were treacherous for travellers.