5 Things to Know This Morning

— -- Your look at the five biggest and most buzz-worthy stories of the morning.

1. Ohio State Beats Oregon to Win National Championship

Every time the Buckeyes looked done, they kept getting better. And in the new era of college football, that was enough to earn a chance to win a championship.

They took advantage of an opportunity they never would have had in the BCS, shrugging off questions about if they belonged among the college football's final four. Cardale Jones, Ezekiel Elliott and the Buckeyes won the first College Football Playoff national championship, upsetting Marcus Mariota and Oregon 42-20 on Monday night.

2. 1 Person Dies After Smoke Empties DC Subway Station

Smoke from an unidentified source filled a busy downtown subway station in the nation's capital Monday, forcing the evacuation of hundreds just before afternoon rush hour, authorities said. One person died and dozens were injured.

Hundreds of passengers were evacuated from the L'Enfant Plaza station, one of the subway system's busiest, about 3:30 p.m., said District of Columbia Fire and EMS spokesman Timothy Wilson.

Fire and EMS spokeswoman Caroline Laurin confirmed that a person had died, but declined to say more. She said the National Transportation Safety Board, whose office is located at L'Enfant Plaza, was investigating and would provide additional information. The NTSB tweeted that it had begun an investigation and was on the scene.

3. Devon Still's Heartbreaking Update on His Daughter's Cancer Battle

Cincinnati Bengals player Devon Still delivered some heartbreaking news on his Instagram account: His daughter's battle with cancer is not yet over.

"I wanted to hear so bad that my daughter's cancer was gone and when I didn't it hurt me bad," Still wrote. "I couldn't even bring myself to tell my family the results without breaking down. I honestly just wanted to shut down from every one.

“But I understand that blessing don't happen when I want them to, they happen when they're suppose to. So we are going to keep faith and keep fighting no matter what. #LeahStrong #BeatCancer"

4. Universal Flu Vaccine Soon a Reality, Scientists Say

A flu vaccine that works against all flu viruses and provides protection for at least two decades is getting closer to reality, according to scientists at Mount Sinai Health System.

The organization’s vaccine would offer better and broader and longer-lasting protection against seasonal influenza viruses as well as novel influenza viruses, Dr. Peter Palese, the chair of the department of microbiology of the Icahn School of Medicine at Mount Sinai told ABC News.

“It could potentially protect someone for a whole lifetime,” Palese said.

5. Flower Girl, Ring Bearer Walk Down Aisle Again as Bride and Groom

Briggs Fussy and Brittney Husbyn once served as ring bearer and flower girl at a Minnesota wedding -- and two decades later they would walk down the aisle a second time.

This past weekend, though, the 22-year-olds weren't just presenting rings or tossing petals. They were the bride and groom.