NPR News

I often get asked what an "expanding universe" really means.

It's confusing, and for very good reasons. So, if you are perplexed by this, don't feel bad. We all are, although cosmologists — physicists that work on the properties of the universe — have figured out ways to make sense of it. In what follows, I'll try to explain how to picture this.

In the next few weeks, we will address other bizarre cosmic questions, such as the meaning of the Big Bang and the future and material composition of the universe.

Newly arrived from Moscow, just hours after cutting short his diplomatic visit to Russia, Philippine President Rodrigo Duterte stepped behind a podium to explain his decision to declare martial law in the southern island of Mindanao.

With his right hand raised, Duterte made a stark pledge.

"If I think you should die, you will die. If you fight us, you will die. If there's an open defiance, you will die. And if it means many people dying, so be it," Duterte said at the news conference Wednesday. "That's how it is."

The year was 1945, and 2-year-old Lindy Thomson had been given a few weeks to live. She suffered from diarrhea and projectile vomiting, and she was so thin and weak, she could no longer walk. Her parents had taken her from doctor to doctor. Finally, Dr. Douglas Arnold in Buffalo, N.Y., offered a most unusual prescription: She was to eat bananas.

"At least seven bananas a day," recalls the patient, who now goes by her married name, Lindy Redmond.

Sleek, high-tech wristbands are extremely popular these days, promising to measure heart rate, steps taken during the day, sleep, calories burned and even stress.

Last year's Zika outbreak in Miami likely started in the spring of 2016, with the virus introduced multiple times before it was detected, researchers say. And most of those cases originated in the Caribbean.

Early Tuesday morning I awoke to the horrific news of the Manchester terror attack. A suspected suicide bomber killed at least 22 people and injured dozens more at an Ariana Grande concert.

I must admit that I don't know Ariana Grande or her music, but since then I have learned that she has a large fan base of female teens and tweens. So I now wonder: Was this attack a deliberate attempt to silence those young women and girls enjoying themselves at a concert?

President Donald Trump says the world must confront extremists or, in his words, “drive them out.”

After the attack in Manchester, England, can we stop extreme ideologies, or do we need to rethink what’s possible?

GUESTS

Peter Bergen, CNN’s national security analyst; vice president and director of the international security program at New America; author of “United States of Jihad: Investigating America’s Homegrown Terrorists.”

It was in May 1986 that Top Gun brought the need for speed — and beach volleyball — to American movie theaters.

Melania Trump accompanied the president to the Vatican Wednesday, wearing a black veil and long-sleeved, Dolce and Gabbana black dress.

George Foreman at 25 years old was a fearsome champion: 6 foot 4, biceps thick and gnarled as oak, a permanent scowl on his face and a right hand that flattened every opponent he faced.

So when Muhammad Ali challenged him in 1974 for a championship fight dubbed the Rumble in the Jungle in Zaire (now the Democratic Republic of the Congo), most bets were on Foreman.

Ali was seven years older and past his prime. He'd had his title stripped after refusing the Vietnam draft in 1967 and was struggling to become a contender again.

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