Camila Domonoske

Pfizer and Allergan won't be merging after all, the companies announced Wednesday.

U.S. drugmaker Pfizer and Irish competitor Allergan were planning to combine into the largest pharmaceutical giant in the world.

At a rally in Portland, Ore., on Friday morning, Bernie Sanders had an unexpected visitor.

And the crowd went wild.

If you haven't seen it yet, here's the video:

Two men have been charged with crimes related to terrorism in connection with Tuesday's attacks on Brussels. Meanwhile, a march planned to commemorate the attack and express national unity has been canceled because of security concerns.

The attacks, which killed 31 and wounded more than 300, struck Brussels Airport and a metro station in the city. The suicide bombings have been claimed by the Islamic State.

The men charged Saturday were arrested during a series of sweeps and raids conducted by Belgian authorities on Thursday and Friday.

Bernie Sanders swept all three Democratic caucuses that were held on Saturday, according to the Associated Press.

He took each state by a striking margin. In Washington state — the biggest prize for Sanders, where 101 pledged delegates were up for grabs — Sanders won with 73 percent of the vote.

In Alaska, with 16 pledged delegates were at stake, Sanders won with 82 percent; and in Hawaii, with 25 delegates, the senator from Vermont won with 70 percent.

U.S. Secretary of State John Kerry says that Americans were among those killed in Tuesday's terrorist attacks in Belgium's capital, which killed at least 31 people and injured hundreds more.

Speaking in Brussels on Friday, Kerry said he was grieving with "the loved ones of those who have been very cruelly taken from us — including Americans."

The director of the State Department Press Office has since specified that two U.S. citizens were killed in the attacks.

It's the first confirmation of American deaths in the attacks.

Two days after terrorist attacks in Brussels killed at least 31 people and injured hundreds more, Belgian authorities continue to search for a suspect seen on surveillance footage.

And Belgium enters its second day of mourning, with an often-divided country grieving across divisions of language and politics.

Belgium had been on its highest-level alert for terrorism since the Paris attacks in November until authorities lowered that level by one notch on Thursday. Officials warn, though, that another attack is likely.

Air Force Gen. Lori Robinson will be nominated as the next head of U.S. Northern Command, Defense Secretary Ash Carter announced Friday. If approved, she would be the first female head of a combatant command.

The U.S. military divides the world into geographic regions that are each overseen by a four-star general or admiral directing military operations across the branches of service. None of those combatant commanders has ever been a woman.

The legal dispute between Apple and the FBI continues: the government has filed a response to Apple's refusal to cooperate with a federal magistrate's order instructing it to assist the FBI in circumventing the security features on an iPhone used by one of the San Bernardino shooters.

He lives vicariously through himself. He has won the lifetime achievement award, twice. In museums, he is allowed to touch the art. He is ...

... out of a job.

In the ocean near Hawaii, more than 2 1/2 miles underwater, scientists have discovered a small, delicate-looking and ghostlike little octopod — possibly a new species.

The animal was discovered by Deep Discoverer, a remotely operated vehicle, or ROV — picture a small, unmanned submarine equipped with cameras and a robotic arm — that was working to collect geological samples.

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