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Morning Edition host Rachel Martin interviews former Vice President Joe Biden aboard his campaign bus en route to Decorah, Iowa, about his bid for the Democratic nomination and the impeachment inquiry against President Trump.

This is the transcript of a conversation held on Dec. 6, 2019.

Rachel Martin: Mr. Vice President, thank you very much for having us.

Former Vice President Joe Biden: Well thanks for being on the bus. I appreciate it.

On the bus, very exciting. So we're in Iowa.

The Justice Department's internal watchdog is set to release a highly anticipated report Monday about the Russia investigation — including allegations of surveillance abuses against President Trump's campaign.

Inspector General Michael Horowitz's report is expected to address a simmering dispute that lies at the heart of the partisan fight that has animated Washington for the past two years.

The question is, Did the Justice Department and FBI do anything improper when investigating possible ties between the Trump campaign and Russia?

Democrats are set to press ahead with their impeachment program on Monday by reviewing the findings of their earlier investigations — likely with Republicans battling every step of the way.

The House Judiciary Committee has scheduled a hearing at which staff attorneys are set to tell members of Congress about the conclusions reached by the earlier House Intelligence Committee on the Ukraine affair.

Caroll Spinney, the actor and puppeteer who portrayed Big Bird and Oscar the Grouch on Sesame Street over five decades, died Sunday at age 85.

The Sesame Workshop said Spinney had died at home in Connecticut, and that he had long lived with dystonia, a disorder that causes involuntary muscle contractions.

In Glacier Bay, Alaska, mountains rush up farther and faster from the shoreline than almost anywhere else on the planet. Humpback whales, halibut and sea otters ply the waters that lap rocky, pine-crowned islands, and you can stick a bare hook in the water and pull out dinner about as fast as it takes to say so.

This is the place 31-year-old Laura Marcus chose for her Arete Project. Or just maybe, this place chose her.

The FBI is investigating the shooting at Naval Air Station Pensacola on Friday as an act of terror.

Rachel Rojas, the special agent in charge of the FBI's Jacksonville Field Office, said in a news briefing Sunday that investigators are working with "the presumption that this was an act of terrorism."

Doing so, she said, "allows us to take advantage of investigative techniques that can help us more quickly identify and then eliminate any additional threats to the rest of our community."

There is currently no evidence of such a threat, she added.

Updated at 12:05 p.m. ET

The fast-rising rapper Juice WRLD has died at age 21 after a medical emergency at Chicago's Midway Airport. TMZ first reported the death, saying that witnesses saw him having a seizure after disembarking from a private plane.

The Cook County medical examiner's office confirmed his death to NPR, saying that the autopsy for Juice WRLD — whose real name was Jarad Anthony Higgins — will most likely take place on Monday.

A fire broke out at a factory in India's capital New Delhi early on Sunday morning. At least 43 people have been reported dead.

Many of the victims were asleep in beds in the factory, resting between shifts, when the fire began.

Investigators say the blaze was sparked by an electrical short circuit. Most of the deaths were caused by people inhaling poisonous gases in the cramped factory, The Associated Press reports.

Guides hand out knee-high rubber boots before leading visitors on hikes around Gorgona National Park, an island 21 miles off Colombia's Pacific coast. The boots provide traction in the mud — and protection from poisonous snakes.

Imagine Venice, the city of canals, at Christmastime — twinkling with lights and dressed in garlands.

Now translate that into gingerbread and gumdrops.

That's exactly what hundreds of architects, designers and engineers came together to do — build the Italian city made up of more than 100 small islands out of Snickers, Mars bars, Jellybeans, cereal, gummy bears and more. And, of course, sheets and sheets of gingerbread.

In an unprecedented response to historically low numbers of Pacific cod, the federal cod fishery in the Gulf of Alaska is closing for the 2020 season.

The decision, announced Friday, came as little surprise, but it's the first time the fishery has closed due to concerns over low stock.

"We're on the knife's edge of this over-fished status," North Pacific Fishery Management Council member Nicole Kimball said during talks in Anchorage.

It's not over-fishing to blame for the die-off, but rather, climate change.

Bring in some soup.

The unusual homework assignment at London's Eden Primary School was for a science week project cooked up by parent Jake Baum. He's a professor of cell biology and infectious diseases at Imperial College London, and his lab's job is to find new ways to combat malaria, which kills half a million children each year.

This story was supported by the Pulitzer Center on Crisis Reporting.

A privately funded, nonprofit organization is creating a 3.2 million-acre wildlife sanctuary — American Prairie Reserve — in northeastern Montana, an area long known as cattle country.

There's a lot of enthusiasm for intermittent fasting — a term that can encompass everything from skipping a meal each day to fasting a few days a week.

Fresh Air Weekend highlights some of the best interviews and reviews from past weeks, and new program elements specially paced for weekends. Our weekend show emphasizes interviews with writers, filmmakers, actors and musicians, and often includes excerpts from live in-studio concerts. This week:

Edward Norton On Urban Planning And 'Slow Cooking' 'Motherless Brooklyn': Norton wrote, directed and starred in the film adaptation of Jonathan Lethem's novel. The movie centers on a detective with Tourette's syndrome who uncovers corruption in New York City.