This week on "Sunday Morning" (August 5)

A floating island of plastic waste off the coast of Honduras. Because plastics do not biodegrade, much of our waste that is not recycled ends up in landfills or the ocean. 

CBS News

Last Updated Aug 5, 2018 12:16 PM EDT

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COVER STORY: Piling up: Drowning in a sea of plastic | Watch Video
In the 1950s, scientists invented a new material that would change the world forever: plastic. Cheap, durable, sanitary, strong, and light – and, as we have seen in the years since, very, very difficult to get rid of once we are done with it. About 70 percent of our discarded plastic winds up in open dumps or landfills, but much winds up in an even worse place: the ocean. David Pogue reports on why, even with recycling, it is so hard to get rid of plastic.

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ALMANAC: "American Bandstand" | Watch Video
On August 5, 1957, Dick Clark's music series of pop stars and dancing teens went national. Jane Pauley reports. 

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MUSIC: The Billboard Hot 100's All-Time Top Songs | Watch Video
To commemorate the 60th anniversary of its music chart this week, Billboard released its list of the all-time top songs.

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ART: The pioneering prints of Dox Thrash | Watch Video
Artist Dox Thrash (1893–1965), who attended night classes at the Art Institute of Chicago while working as an elevator operator, revolutionized printmaking in the 1930s by pioneering a completely new process called carborundum mezzotint – scraping away dark layers to reveal lighter grays and whites underneath. Faith Salie looks at the unique work of the African American artist.

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AMUSEMENTS: Sandboarding: Hitting slopes of sand | Watch Video
It's an unlikely spot for one of the world's most unusual sports … because in a national park, far from a beach or desert, people are encouraged to slide down sand dunes as if they were on a snow-packed mountain. Barry Petersen tries his hand at sandboarding at Great Sand Dunes National Park & Preserve in Colorado.

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DELICACIES: On the hunt with truffle-sniffing dogs | Watch Video
Only the best noses advance at the North American Truffle Dog Championship, in Oregon, where contestants work to catch the carefully-buried scent of the pungent, and pricey, delicacies. John Blackstone reports.

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PASSAGE: A museum of comedy | Watch Video
The new National Comedy Center, in the hometown of TV legend Lucille Ball, celebrates comedy as an art form. Jane Pauley reports. 

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HARTMAN: A class in digging up history (Video)
If you had to think of a good site for an archaeological dig, you probably wouldn't think of a coat closet in the Children's Workshop School in Manhattan. But a couple of years ago, student Bobby Scotto starting digging into a crack in the floor, sparking a string of valuable finds. Steve Hartman reports.

TELEVISION: Talk show host Jimmy Kimmel speaks his mind | Watch Video
He might be walking in the footsteps of giants, but late-night host Jimmy Kimmel has found a way to stand out. He was always the lovable frat boy at 11:30, often more playful than political. But Kimmel put comedy on hold when his on-air story about his son's fight for life became a call to action on healthcare; and following the Las Vegas massacre, his monologue turned into an emotional call for sanity … and gun control. Kimmel talks with correspondent Tracy Smith about his road to late-night, and why he's not so bothered if viewers are upset by his heartfelt monologues: "I don't say, 'I don't mind.' I'd love for everyone -- I want everyone with a television to watch the show. But if they're so turned off by my opinion on healthcare and gun violence, then I don't know. I probably won't wanna have a conversation with them anyway." (This story originally aired on October 15, 2017.)

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HEALTH: Maternal mortality: An American crisis | Watch Video
The United States is the only industrialized country where the rates of maternal deaths have increased, rather than decreased. And "near deaths" are on the rise: 60,000 a year across the country. Erin Moriarty of "48 Hours" talks to young woman who have a higher risk of dying during pregnancy and childbirth than their mothers did, and meets a midwife from England who saw expectant mothers being turned away from doctors offices in Florida, and in response opened up a health clinic that welcomes everyone.

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OPINION: Jim Gaffigan on the need for a good nap | Watch Video
According to the comedian, staying awake is overrated.

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CALENDAR: Week of August 6 | Watch Video
"Sunday Morning" takes a look at some notable events of the week ahead. Jane Pauley reports.

NATURE: Wild horses (Video)
We leave you this Sunday Morning among the wild horses of Assateague Island in Maryland. Videographer: Carl Mrozek.

WEB EXCLUSIVES: 

IN THE LIFE OF: "We Are Here": A plunge into the world of disco with director Steven Hoggett | Watch Video
A new Off-Off-Broadway musical recreates the nightclub scene in 1970s New York City with music by Nile Rodgers.

FROM THE ARCHIVES: Goats as lawn mowers | Watch Video
For years Denver faced a troubling force of nature: Thousands of acres of noxious weeds spreading through the city. In an effort to deal with the botanical nightmare, the city turned to an unlikely ally: goats. Correspondent Bill Geist talked with naturalist Gail Weinstein of Denver Parks and Recreation, and with shepherd Lani Lamming, whose goat herd makes quick work of the city's suffocating flora. (This story was originally broadcast October 10, 1999.)

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Two leopard cubs having a slight disagreement while Mom is out hunting.

NATURE UP CLOSE: Back to Africa
Judy Lehmberg begins a two-month sojourn at Kruger National Park in South Africa, and Kenya's Maasai Mara National Reserve.


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You can also download the free "Sunday Morning" audio podcast at iTunes and at Play.it. Now you'll never miss the trumpet!