Live from NPR News in Washington, I'm Windsor Johnston.

Police in Baltimore say they're looking for at least two suspects following a mass shooting

at a block party over the weekend.

Two people are dead and 28 others were wounded in the attack.

Mayor Brandon Scott says his office is using every available resource to assist with the

investigation.

We want everyone to come forward and say, treat this.

It was your daughter, your son, your brother, your cousin that was out here shot at this

event.

We must come together as Baltimore and wrap our arms around this Brooklyn community

and each other.

The shooting marks the latest incident of gun violence in the United States.

According to the gun violence archive, more than 300 mass shootings have been recorded

in the US so far this year.

Smoke from wildfires in Canada continues to drip south into the US.

As Dan Carpenshuk reports, many states and regions of Canada are under air quality alerts

and warnings.

The smoke in haze has prompted air quality alerts in central Canada as well as from Wisconsin

to Vermont and as far south as North Carolina.

Canadian officials say there are more than 500 active wildfires burning across Canada,

mainly in British Columbia, Alberta, Ontario and Quebec.

Some of them so out of control, authorities say they have no choice but to leave them

...