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

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

1. Second victim of Washington high school shooting dies

One of four students injured in Friday's school shooting at Marysville-Pilchuck High School died Sunday night. "Words cannot express how much we will miss her," 14-year-old Gia Soriano's family said in a statement. Another female victim died on Friday. Shaylee Chuckulnaskit, 14, and Andrew Fryberg, 15, remained in critical condition, while Nate Hatch, 14, was in serious condition. The two male victims were cousins of the shooter, Jaylen Fryberg, 15, who died from a self-inflicted gunshot wound. Police have not released a motive for the shooting. Read more in NEWS.

2. Canadian parliament shooter made video right before attack

Investigators have discovered that the man, who killed Canadian soldier Cpl. Nathan Cirillo before storming the parliament building last week, had made a video right before the attack. Michael Zehaf-Bibeau, who was killed by police and guards during the attack, "was driven by ideological and political motives," according to the Royal Canadian Mounted Police. The video is not being released. Read more in NEWS.

Meanwhile, public calling hours will be held today in Cirillo's hometown:

3. Lawyers for quarantined nurse say they’ll sue for her release

A nurse who is quarantined in New Jersey, according to new guidelines for people who return from treating Ebola patients, has enlisted the help of a lawyer to get her out of a tented area at a New Jersey hospital. Civil liberties attorney Norman Siegel said Kaci Hickox shows no signs of being sick. A spokesman for New Jersey governor Chris Christie said in a statement that "non-residents" who had contact with Ebola patients "would be transported to their homes if feasible and, if not, quarantined in New Jersey.” Read more in NEWS.

4. Lava gains speed as it flows toward Hawaiian town

Emergency response personnel were going door-to-door in a neighborhood near the village of Pahoa, on Hawaii's Big Island to warn residents that evacuations could be imminent. The lava — at a temperature of around 2,000 degrees — sped up Sunday, flowing at about 15 to 20 miles per hour. The flow was 600 yards from the main road in the town at 9:30 p.m. local time Sunday (3:30 a.m. Monday ET). Read more in NEWS.

5. FAMU marching band hazing trial begins

Four former Florida A&M University's marching band members are scheduled to go to trial Monday on charges of felony hazing and manslaughter in the 2011 death of drum major Robert Champion, who died after being beaten during a hazing ritual. His death shed a light on hazing at FAMU and other colleges, and led to the resignation of FAMU's president. Eleven other former members, who were charged but had their cases settled, could end up on the witness stand in the trial. Read more in NEWS.

6. Cardinals outfielder killed in car crash

Cardinals outfielder Oscar Taveras, 22, and his girlfriend were killed in a car crash Sunday afternoon in Puerto Plata in the Dominican Republic. Taveras made his major league debut on May 31. "Oscar, a young member of the Baseball family, was full of promise and at the dawn of a wonderful career in our game, evident in the game-tying home run against the Giants exactly two weeks ago," Baseball Commissioner Bud Selig said in a statement. Read more in SPORTS.

7. Prosecutors seek death penalty for Sewol ferry captain

Prosecutors in a South Korean court said that Lee Joon-seok, 68, should be sentenced to death for the deaths of 304 people that died when the ferry he was the captain of capsized in April. Lee was one of 15 crew-members accused of abandoning the boat after telling the passengers — most of the school-aged — to remain in their cabins as the ferry listed severely. Read more in NEWS.

… What’s trending today?

"Back to the Future II" made the promise that a hoverboard would be a reality by 2015, and it looks like Robert Zemeckis was right. The inventors of the world's first hoverboard came upon the idea by accident, while trying to design building that wouldn't be affected by an earthquake. Instead, they ended up with a prototype for something that was once a fantasy. Unfortunately, the first ten are going for $10,000.