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

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

1. Bomb Brain Trust: A Look Inside ISIS Terror Laboratory

From a safe haven in Syria, an ISIS brain trust is conducting research on conventional and unconventional weapons, including surface-to-air missiles and chemical agents, current and former U.S. intelligence officials tell NBC News. Read more in NEWS.

2. Sheriff Meets With Oregon Occupiers, Offers 'Safe Escort'

The sheriff of the Oregon county where armed anti-government activists have occupied federal land asked the protesters to go home Thursday at their first meeting since the confrontation began. Read more in NEWS.

3. Hard to Swallow? How to Make New Eating Guidelines Work

Ten percent of calories from sugar. Ten percent from saturated fat. Less than 2,300 milligrams of sodium a day. If it sounds like a lot of work to you, you are not alone. Even some of the country’s leading nutritionists say it’s a struggle to figure out how to follow the latest dietary guidelines released by the federal government Thursday. Read more in HEALTH.

4. Feds Say Terrorism-Related Arrests Made in 2 States

Authorities said Thursday that two people with ties to ISIS have been arrested on terrorism-related charges in California and Texas, including a refugee from Syria who is charged with lying to federal investigators about his travels to the civil war in that country. Read more in NEWS.

5. Dealers Often 'Impregnate a Young White Girl': Maine Gov.

Maine’s controversial Republican governor, Paul LePage, said that out-of-state drug traffickers with names like “D-Money” often “impregnate a young white girl” while visiting the area to sell heroin. Read more in POLITICS.

6. Giant Speakers Blast K-Pop at North Korea Over Nuke Test

South Korea responded on Friday to a nuclear test conducted by its northern neighbor by blasting Korean pop music toward the isolated rogue nation, an official said. Read more in NEWS.

7. N.C. 'Can Opener' Bridge Wreaks Havoc on Trucks

It’s known as "the can opener." A railroad bridge in Durham, North Carolina, that has been the scene of at least 101 accidents since 2008 involving trucks and other large vehicles that slammed into the bottom of the structure. Meet the man who has been documenting crashes at the can opener. Read more at NIGHTLY NEWS.