Updated at 11:30 a.m. ET

Dutch police are searching for a man who opened fire inside a tram in the city of Utrecht, killing three people and wounding five others late Monday morning. Police say they're investigating a "possible terrorist motive" for the attack.

Utrecht Mayor Jan van Zanen confirmed the three deaths in a video update around 3 p.m. local time, saying that three of the wounded are facing serious injuries.

In February, Pope Francis acknowledged a longstanding dirty secret in the Roman Catholic Church — the sexual abuse of nuns by priests.

It's an issue that had long been kept under wraps, but in the #MeToo era, a #NunsToo movement has emerged, and now sexual abuse is more widely discussed.

New Zealand's cabinet has agreed "in principle" to tighten gun control laws, Prime Minister Jacinda Ardern said Monday, promising the changes will make the country safer. "We've unified, there are simply details to work through," she said.

In the U.S., older people with dementia are usually told they have Alzheimer's disease.

But a range of other brain diseases can also impair thinking and memory and judgment, according to scientists attending a summit on dementias held Thursday and Friday at the National Institutes of Health.

These include strokes, a form of Parkinson's disease and a disease that damages brain areas that regulate emotion and behavior.

For 18-year-old high school senior Ellie Rapp of Pittsburgh, the sound of her family chewing their dinner can be ... unbearable.

"My heart starts to pound. I go one of two ways. I either start to cry or I just get really intensely angry. It's really intense. I mean, it's as if you're going to die," she says.

Rapp has been experiencing this reaction to certain noises since she was a toddler. She recalls a ride home from preschool when her mother turned on the radio and started singing, which caused Rapp to scream and cry hysterically.

The Bernie Sanders who's running for president in 2020 is not the same Bernie Sanders who ran in 2016.

Yes, he has many of the same policy positions, and many of his 2016 supporters are enthusiastically backing him again. But the Vermont independent senator is no longer the insurgent taking on a political Goliath with huge name recognition. Now, he is the candidate with high name recognition, taking on candidates who are introducing themselves to the American people again.