A thick fog covered Duluth’s Civic Center around noon Friday.

That didn’t stop at least a couple hundred people, many of them students, from gathering by City Hall. Holding signs and chanting that climate change is real, they called for governmental action to confront the issue.

The student-led Duluth Youth Climate Strike is part of a growing global movement led by young people concerned about their futures. The first global climate strike took place on March 15 and engaged an estimated 1.4 million people around the world, including students who marched the streets of downtown Duluth.

Friday was the first day of a weeklong global climate strike. More than 450 youth-led climate strikes are planned in the United States. More than 2,500 strikes are planned in 117 countries around the world. The United Nations Global Climate Summit takes place in New York City Monday.

Locally, adults concerned about climate change are launching the Duluth Climate Mobilization campaign at 6 p.m. Tuesday at Gichi-ode' Akiing (the former Lake Place Park).