KNOW IT ALL: Wednesday's Top 7 Stories at NBC News

Breaking News Emails

Get breaking news alerts and special reports. The news and stories that matter, delivered weekday mornings.

Good morning. Here are some of the stories we're following today:

1. Manhunt Grows for 3 Suspects in Illinois Cop’s Killing

As a northern Illinois community mourned Lt. Charles Joseph Gliniewicz, a popular veteran police officer who was fatally shot while on duty Tuesday, authorities scoured the area overnight in search of three men wanted in his slaying. Helicopters were aiding about 100 officers early Wednesday as the manhunt in and around the village of Fox Lake stretched into a second day. Read more in NEWS.

2. American Catholics Clash With Church Over ‘Sins’: Study

A Pew Research Center survey ahead of Pope Francis' trip to the United States finds that much of his American flock does not agree with the church's positions on premarital sex, gay marriage, contraception and divorce. The poll comes just as the pontiff said priests can absolve women during the Holy Year who have had abortions, considered a grave sin. Read more in NEWS.

3. Why Hasn’t Clerk Defying Gay Marriage Ruling Been Fired?

Rowan County, Kentucky, clerk Kim Davis said Tuesday that she feels empowered by "God's authority" to defy the U.S. Supreme Court and deny marriage licenses to same-sex couples. But because she was elected to the position, only lawmakers can vote to remove her by impeachment. Read more in POLITICS.

4. Obama’s Alaska Tour Highlights Climate Plight

President Barack Obama's historic trip to the region this week is bringing unprecedented attention to the plight of Alaskans who are seeing their environmental surroundings dramatically change. For instance, Shishmaref is one of more than two dozen villages that are washing into the ever-rising sea, making their residents the nation's first real climate change refugees. Read more in NEWS.

5. Video Suggests Suspect Killed by Cop Had Hands Up

Video of a fatal police shooting in San Antonio, Texas, where the suspect — 41-year-old Gilbert Flores — appeared to have his hands up has sparked a growing outcry and appeals for calm from authorities. Read more in NEWS.

6. CNN Changes Debate Rules After Fiorina Outcry

The cable network is amending the rules for its Sept. 16 GOP debate amid outcry that its criteria for participation would unfairly exclude candidate Carly Fiorina — despite her recent boost in national polls. Now, any candidate who "ranks in the top 10 in polling between August 6 and September 10 will be included." Read more in POLITICS.

7. 1st Hearing Set for Cops Charged in Gray Death

Protesters are expected to gather ahead of the 9:30 a.m. ET pre-trial motions hearing in the case against six Baltimore police officers criminally charged in the death of Freddie Gray. The 25-year-old black man died a week after suffering a spinal injury while in custody in April, sparking rioting and looting in the city. Read more in NEWS.

Nightly Spotlight

Fortune hunters have descended on Poland to search for a legendary buried treasure that's remained hidden for 70 years — but is this legend for real?