Parts of the Northeast, including New York City, were engulfed in an orange haze Wednesday due to wildfires burning in Canada. Health officials have advised people to wear masks to protect themselves from the blanket of harmful smoke. Lilia Luciano reports.

New York City had the worst air quality in the world after smoke from Canadian wildfires spread across the U.S. Northeast and conditions are expected to stay poor through the weekend. Also, former Vice President Mike Pence officially announced his 2024 presidential campaign in Iowa. All that and all that matters in today’s Eye Opener.

Ukraine’s president has called for an international rescue operation amid concern for civilians in flooded Russian-occupied parts of Kherson.

Poor air quality due to wildfires can be dangerous for pets both indoors and outdoors. Experts are sharing safety and health tips.

Smoke from wildfires burning in Canada has blanketed parts of the U.S. East Coast for more than a day now, bringing with it hazardous conditions. Nanoparticles in the smoke could be damaging to the lungs and cardiovascular system. Lilia Luciano has the latest.

Air pollution costs the U.S. $800 billion a year, data shows. Wildfires — driven by climate change — are making it worse.

Smoke from hundreds of wildfires in Canada continues to drift south, causing dangerous conditions. Senior White House and political correspondent Ed O’Keefe and Weill Cornell Medical professor Dr. Jay Varma discuss the worsening conditions.

Millions of workers who work outdoors should take extra precautions due to the poor air quality in parts of the Northeast, a physician says.

Public schools barred students from going outside, while sports organizations scrapped events because of unhealthy air.

Forecasts suggest hazy skies and reduced air quality will persist across the Northeast and into the Midwest for at least a few more days.

Canada is on track to have its most destructive wildfire season in history — and climate change has set the stage.