Amy Held

After suspected Boko Haram militants launched a brutal attack in the town of Rann in Nigeria's northeastern Borno State Thursday, killing several people including aid workers, Doctors Without Borders has pulled out of the town.

The departure is sure to be a blow to the tens of thousands of displaced people living in a nearby camp.

Updated at 2:45 p.m. ET

Olympic gymnast Aly Raisman filed a lawsuit Wednesday against the U.S. Olympic Committee and USA Gymnastics, saying the organizations "knew or should have known" about team doctor Larry Nassar's longstanding, widespread abuse, and yet failed to act.

Raisman says she suffered "serial molestation, sexual abuse and harassment" by Nassar, a "trusted" team physician, who is also named in the lawsuit.

Stemming from Siberia then sweeping south to the Mediterranean and west across much of Europe, unusual cold and snow are bringing picturesque vistas — as well as misery and turmoil — this week.

Airports have ground to a halt, schools have shut down, and several people have died.

It's not called a snail's pace for nothing, but just how slow is too slow for the mollusk to move? According to a pub in England, hibernation is where they draw the line.

The Dartmoor Union Inn in Devon was promoting a snail racing championship for Saturday, promising guests, "each thrilling race will last about 4 minutes with guests able to bet on their favourite snail."

Proceeds would go toward city emergency services.

Except it's so cold in the United Kingdom that even the snails are hunkering down.

When Boko Haram extremists snatched 276 girls from a boarding school in northeast Nigeria in 2014, the world reacted and rallied around the cry of "bring back our girls." But now, some four years later, it appears to be happening again.

As the Olympic Games in Pyeongchang that saw the two Koreas come together — if briefly — came to a close on Sunday, another potential sign of détente emerged; North Korea said it was willing to hold talks with the United States, according to South Korea's presidential Blue House.

Updated at 6:35 p.m. ET Saturday

As a groundswell grows against the National Rifle Association in the aftermath of last week's school massacre in Parkland, Fla., several businesses say they are ending their partnerships with the gun advocacy group.

The brands — ranging from insurance companies to airlines to rental car agencies — announced their decisions on social media, many apparently in direct response to tweets demanding change under the trending hashtag #boycottNRA.

State legislators in Florida came together on Wednesday — the same day student activists gathered outside the House chamber in Tallahassee to demand stricter gun laws, one week after the school massacre in Parkland — to pass a measure related to schools, but not guns.

No immediate relief is in sight for a swath of the Midwest where heavy rain, melting snow and rising rivers have shuttered schools, closed roads and prompted several evacuations.

Black Panther pounced on the weekend box office, breaking cultural barriers and earning the highest debut ever for a February film, with an estimated three-day domestic gross of $192 million, said Disney, Marvel's parent company.

The opening was the fifth highest-earning of any film, according to Disney. The only other movies that have brought in more are Star Wars: The Force Awakens, Star Wars: The Last Jedi, Jurassic World and The Avengers, according to The Associated Press.