KNOW IT ALL: Monday's Top 6 Stories at NBC News

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Good morning, and happy Monday. Here are some of the stories we’re following today:

1. Unseasonable freeze hits huge part of country

It's November, but much of the country will have to contend with January-like temperatures during the first half of the week. Six people were already killed in the storm due to accidents on icy and snowy roads in Texas, Ohio and Minnesota. And more snow is coming — a lot in some places. A band of heavy lake-effect snow will hit Ohio, Pennsylvania and parts of northern New York hard, dropping up to 3 feet by the time of Wednesday's commute. Read more in WEATHER.

2. ISIS victim had ‘desire to use his life to save the lives of others’

ISIS claimed to behead humanitarian aid worker Abdul-Rahman Kassig in a video released early Sunday morning. Kassig, 26, a former Army Ranger, was working in Syria when he was captured in 2013. Kassig's parents on Sunday said they knew their son "found his home amongst the Syrian people, and he hurt when they were hurting." The Iraq war veteran wrote in 2012 from an area of refugee camps outside Beirut, Lebanon that "here, in this land, I have found my calling." Read more in NEWS.

3. Feds check up on NFL teams’ medical staffs

Drug Enforcement Administration agents made surprise visits to at least three NFL teams' medical staffs after they played away games Sunday. The San Francisco 49ers, the Tampa Bay Buccaneers and the Seattle Seahawks each faced inspection. "DEA agents are currently interviewing NFL team doctors in several locations as part of an ongoing investigation into potential violations of the (Controlled Substances Act)," said DEA spokesman Rusty Payne, who added no arrests were made. Read more in SPORTS.

4. Pope Francis announces first trip to U.S. as pontiff

Pope Francis officially announced he would attend the World Meeting of Families in Philadelphia in September 2015. The three-day visit will include a public Mass, which officials predict 2 million people will attend. The visit will be the Pope’s first to the U.S. since he was elected to lead the Catholic Church in March 2013. Read more in NEWS.

5. Ebola-stricken surgeon in U.S. for treatment ‘extremely critical’

"He's extremely ill, possibly even more ill than any of the patients who have been transported from Western Africa to the United States," said a spokesman for Nebraska Medical Center, where Dr. Martin Salia, a surgeon diagnosed with Ebola in Sierra Leone, arrived Saturday. As of Sunday night, Salia was still in "extremely critical condition." Salia is a native of Sierra Leone and a legal U.S. resident. Salia's wife, who lives near Washington D.C., arrived in Nebraska on Sunday to be near him. Read more in NEWS.

6. Bono has another mishap

Bono, lead singer of the band U2, needs surgery after injuring his arm in a cycling accident in New York's Central Park. The band said, due to being "one man down," they would need to cancel a week-long residency performing on NBC's "The Tonight Show Starring Jimmy Fallon." The accident came days after Bono and four friends got a scare when the luggage-compartment door fell off his Learjet as they were flying 15,000 feet over Germany. Read more in POP CULTURE.

And Now This ...

With flu season underway, many have been reminded how much they hate needles. But a new technology has been developed that delivers vaccines through a spray, which allows another option for children who are frightened of needles — and adults who are frightened of needles too.

Breaking News Emails

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