1

Diana Ross & Lionel Richie: "Endless Love"

Image: Ethan Smith

Did you know that this pop music classic was actually composed for a movie? Diana Ross and Lionel Richie recorded "Endless Love" for the Motown label, and it was used as the theme song for the 1981 film of the same name, starring Brooke Shields and Martin Hewitt.

Produced by Richie, the song was released as a single from the film’s soundtrack. Although the film was a flop, the song became the top hit single in the United States that year. It reached number one on the Billboard Hot 100 chart and remained there for nine consecutive weeks.

2

Sonny & Cher: "I Got You Babe"

Image: Joop van Bilsen / Anefo, CC0, via Wikimedia Commons

"I Got You Babe" is arguably the biggest hit by Sonny & Cher, one of the most iconic musical duos in history . Sonny Bono wrote it late one night in their basement for his wife, Cher.

Recorded in 1965, the song became a smash hit, reaching number one on the Billboard Hot 100 chart. "I Got You Babe" is a beautiful hymn to love and loyalty , and it has been covered by various artists over the years.

3

Barbra Streisand & Donna Summer: "No More Tears (Enough Is Enough)"

Image: Gritte

Considered one of Donna Summer’s standout songs , "No More Tears (Enough Is Enough)" was recorded with Barbra Streisand in 1979. The song became so popular that several vocalists have recorded their own versions over the years.

Neither Donna nor Barbra ever performed the duet live together, but Streisand sang an excerpt during her Back to Brooklyn concert tour in 2012. At the time, she remarked that if Donna were still alive, she would have loved to perform it with her.

4

Michael Jackson & Paul McCartney: "Say Say Say"

Image: Pavel Danilyuk

The former Beatle had already collaborated with the King of Pop on "The Girl Is Mine," featured on Jackson’s Thriller album. The song was so successful that they teamed up again to record "Say Say Say," the lead single from McCartney’s fourth solo album , Pipes of Peace .

Jackson wrote most of the lyrics, and the legendary George Martin produced the track. It was released in 1983 , along with a music video in which the duo plays a pair of con men selling a miracle potion. The video also featured cameos by Linda McCartney and La Toya Jackson.

5

Aretha Franklin & George Michael: "I Knew You Were Waiting (For Me)"

Image: melojordan94

Did you know this song wasn’t originally written as a duet? It was composed by Dennis Morgan and Simon Climie with Tina Turner in mind . Eventually, Aretha Franklin got the job, and the label later suggested a collaboration with George Michael.

Aretha and George released "I Knew You Were Waiting (For Me)" in 1987. Both artists later stated that they had a great time recording the song and the music video that followed. And it shows, because the tune reached number one on the Billboard Hot 100 and topped charts around the world.

6

Bill Medley & Jennifer Warnes: "(I’ve Had) The Time of My Life"

Image: Chris Duan

Performed by Bill Medley and Jennifer Warnes, "(I’ve Had) The Time of My Life" was released in 1987 as part of the soundtrack for the movie Dirty Dancing . This pop ballad, with rock and soul influences, conveys a sense of celebration and joy, highlighting the importance of special moments that leave lasting memories.

The song was such a huge hit that it reached number one on the Billboard Hot 100 chart and won the Oscar for Best Original Song , the Golden Globe for Best Original Song, and the Grammy for Best Pop Performance by a Duo or Group with Vocals.

7

Nancy & Frank Sinatra: "Somethin’ Stupid"

Image: Elviss Railijs Bitāns

The original version of this song was recorded in 1966 by C. Carson Parks and his wife, Gaile Foote, but it only became widely known in 1967 when Nancy Sinatra performed it with her father, Frank.

It may seem a little unusual for a father and daughter to sing a romantic duet, but their version of "Somethin’ Stupid" became a massive international hit . Although the song was revived in 2001 by another duo—British singer Robbie Williams and Australian actress Nicole Kidman—Nancy and Frank’s rendition remains the most iconic.

8

Kenny Rogers & Dolly Parton: "Islands In The Stream"

Image: 42 North

When the anti-disco backlash nearly ended their reign, the Bee Gees shifted their focus to writing hits for other artists. Originally, "Islands in the Stream" was intended as a soul song for Diana Ross or Marvin Gaye. However, it ended up becoming the quintessential country-pop duet—and one of the biggest hits of Kenny Rogers and Dolly Parton’s careers.

The song is named after Ernest Hemingway’s posthumous novel, but its lyrics speak to the joy of finding that one person you’ve been searching for your whole life. Pretty romantic, don’t you think?

9

Paul McCartney & Stevie Wonder: "Ebony And Ivory"

Image: Osman Rana

Paul McCartney and Stevie Wonder released "Ebony and Ivory" in 1982, and it was an instant hit. Written by McCartney, the song addresses racial integration , using the black and white keys of a piano—working together to create harmony—as a metaphor.

Fun fact: McCartney and Wonder filmed their parts of the music video separately due to scheduling conflicts, but the final result was seamless nonetheless.

10

Joe Cocker & Jennifer Warnes: "Up Where We Belong"

Image: Paul Seling

This powerful and emotional ballad, performed by Joe Cocker and Jennifer Warnes, was released in 1982. The song was created for the soundtrack of the movie An Officer and a Gentleman and captures the essence of overcoming challenges and transcending through love.

"Up Where We Belong" won several major awards, including the Academy Award for Best Original Song, the Grammy Award for Best Pop Performance by a Duo or Group with Vocals, and the Golden Globe Award for Best Original Song . The combination of Cocker’s and Warnes’ passionate vocal performances and the rich instrumentation has made this song an enduring classic.

11

Marvin Gaye & Tammi Terrell: "Ain't No Mountain High Enough"

Image: AndNowProjekt

There’s nothing like the charismatic and luscious voices of Marvin Gaye and Tammi Terrell to convince us of love’s healing power. "Ain’t No Mountain High Enough" was released as a single in 1967 and became a huge hit.

This romantic anthem is just one of the iconic collaborations by the duo that helped define the Motown era, thanks to their vocal harmonies and onstage chemistry . Their list of great soul duets also includes "Your Precious Love," "Ain’t Nothing Like the Real Thing," and "You’re All I Need to Get By," among others.

12

John Travolta & Olivia Newton-John: "You’re The One That I Want"

Image: Mesh

Anyone who has seen the movie Grease is probably a fan of this iconic tune. Immortalized on screen in 1978 by Olivia Newton-John and John Travolta, the song transcended the boundaries of cinema, topped charts worldwide, reached number one in several countries, and became one of the best-selling singles of all time .

1

Boston, Massachusetts

The vast majority of Boston residents hold college degrees. With research-driven institutions like Harvard and Boston University, the city enables a rich academic environment that promotes learning, innovation, and scientific advancement in different fields. In addition, Boston's public schools and statewide educational standards rank among the best in the country!

2

Seattle, Washington

Seattle is definitely considered one of the smartest cities in the US! But why? Well, there are several factors. First, most of its population over age 25 (53.8%) holds a bachelor's degree or higher. And it's no surprise: Seattle is home to the University of Washington, one of the top-ranked universities in the world. In addition, the city is a tech hub, with one in five residents working in STEM fields (Science, Technology, Engineering, and Mathematics).

3

Chicago, Illinois

Chicago is a city everyone should experience at least once. Its rich cultural, intellectual, and innovative atmosphere secures its spot on this list. The city has a well-established education scene, with prestigious institutions like the University of Chicago and Northwestern University, and a high percentage of residents holding professional degrees in fields like law, medicine, and business. Plus, its smart use of technology to enhance life quality makes it stand out even more.

4

Atlanta, Georgia

Atlanta, Georgia, is succeeding in today's world thanks to its growing tech job market and fast internet speeds, making it an ideal place for anyone interested in science and technology. The city is also proud of its academic presence, with standout institutions like Emory University, Georgia Institute of Technology, and Georgia State University.

5

San Jose, California

If you're into technology, San Jose, California, might be your ideal city. As the heart of Silicon Valley, San Jose boasts an elevated number of highly educated residents: Over 26% hold a graduate or professional degree. It's also home to tech giants like Apple and Google, making it a hub of innovation and opportunity.

6

Durham-Chapel Hill, North Carolina

The metropolitan area composed of Durham and Chapel Hill in North Carolina is part of the renowned Research Triangle, named for the three major research universities in the region: Duke University, UNC Chapel Hill, and North Carolina State University. A significant portion of residents in this region hold graduate degrees, particularly in fields like medicine, science, and technology.

7

Boulder, Colorado

Sustainability, innovation, and education are top priorities in Boulder, Colorado. The city has been recognized for its commitment to the environment, including a bold goal of reaching 100% renewable energy by 2030. On top of that, Boulder was highlighted by Forbes as a major "intellectual center," ranking among the US cities with the highest percentage of residents holding a bachelor's degree or higher.

8

Austin, Texas

With over 19% of its residents holding a professional degree, Austin, Texas, has earned its spot on the list. In addition to the prestigious University of Texas fueling its educated population, Austin also has a rapidly growing tech industry. Its young, creative, and highly skilled workforce makes the city stand out even more.

9

Ann Arbor, Michigan

Thanks to its high concentration of highly educated residents, Ann Arbor, Michigan, regularly earns a spot on the list of the smartest cities in the United States. Much of that reputation comes from the University of Michigan, a major science, research, and tech hub, and the city's overall high level of educational attainment.

10

Washington, DC

Washington, DC, also ranks as one of the smartest cities in the country thanks to its high concentration of highly educated professionals, policy experts, and researchers. The capital city also boasts one of the highest graduation rates nationwide. From the Smithsonian Museums and the Library of Congress to the Kennedy Center and the National Archives, the city offers endless opportunities to enrich your cultural experience.

1

Measuring

This is a difference most Americans are aware of: most countries use the metric system rather than U.S. customary units, and most use Celsius instead of Fahrenheit. Countries such as the UK and Canada still use some imperial units in everyday life, but they mainly use the metric system. Another measure that confuses foreigners is the particular way ingredients are measured in American recipes, which often use cups, tablespoons, and teaspoons rather than measurements by weight.

Fun fact: The only other countries that use the Imperial system officially are Liberia and Myanmar.

2

Sales tax

Do you find having to calculate sales taxes annoying? That’s a unique American experience. In the majority of the world, the price you see is the price you pay , because it has the sales tax already added.

Why is it different in America? Sales taxes vary across states , so retailers find it easier to showcase the base price and then calculate the total at checkout.

3

Cutlery use

Many Americans abroad are surprised by the realization that not everyone uses a knife and fork in the same way they do . In fact, no one else does. While most Americans have learned the American style —also called the zig-zag or fork switching method— that involves using the fork in the left hand for cutting and then changing it to the right to pick up the food, European and Latin American countries don’t do this . It might seem like a small difference, but it completely changes the way you eat.

4

Iced drinks

Do other countries not have ice? They do, but they don’t necessarily assume everyone will want it. While serving water and other beverages with ice is customary in America, in many other countries, you need to request it —even during the hottest of summers.

But even if you get ice, many times you will need to specify the amount : the same drink that would be filled with ice cubes in America might come to you with just two or three cubes elsewhere.

5

Date formatting

The U.S. is not completely alone on this one, but there’s a difference big enough to be worth mentioning. The standardized way of recording the date in America is month-day-year , a convention also followed by some Caribbean and Asian countries. But in the rest of the Western world, the conventional format is day-month-year , which can lead to confusion for Americans. In most Asian countries , the most commonly used format is year-month-day .

6

The word ‘American’

In the English language, ‘American’ is the only way to refer to people with U.S. citizenship . Other words, such as ‘Usian’ or ‘Unitedstatian’ have been proposed, but never stuck. This is why many Americans are surprised when other countries —Latin American countries in particular— use ‘American’ for anyone in the American continent , or continents, another big difference. In most European and Latin American countries, there is a different word for U.S. citizens, such as the Spanish ‘estadounidense’ or the Portuguese ‘estadunidense’ .

7

Moving out at 18 years old

This one is not so black and white, but more like a general tendency. Compared with most of Europe, Latin America, and Asia, Americans give serious consideration to the possibility of moving out after high school. Not everyone does, and not everyone can afford it, but it's fairly common.

In other countries, young adults generally move out if their job or education requires it , but they tend to stay at home a few more years if they can.

8

Driving a car as a teenager

America is quite car-centric , especially if you live outside of the big cities. While not everyone can afford to have a personal car —even a second-hand one—, it is common for 16 and 17-year-olds to legally drive their parents’ car, or save for their own.

In the rest of the world, the chances of high schoolers driving themselves to school are much lower, as most countries don’t allow underage kids to get a driving license .

9

Solo cups

Do plastic cups exist outside of the U.S.? They do, but they are not as iconic or as widely used as Solo cups, introduced in the 1970s as a disposable but sturdy cup for parties and events. Many foreigners visiting America are surprised when they realize that solo cups are a real thing , and not something that just happens in movies.

10

Filing taxes

Taxes in the U.S. are not that different from taxes in other countries, except for how they are filed . During tax filing season, thousands of Americans direct their efforts to ensure they have properly reported their income and that their return will match the IRS’s data.

In other parts of the world, however, the one responsible for calculating and filing taxes is the government , while citizens merely corroborate that everything is in order.