If you've had a manicure lately, chances are you probably had it done at a nail salon run by people of Vietnamese heritage.

The salons are everywhere — in nearly every city, state and strip mall across the United States. So how did Vietnamese entrepreneurs come to dominate the multi-billion dollar nail economy?

Filmmaker Adele Free Pham set out to answer that question in a documentary called Nailed It. Growing up in Portland, Ore., she says that she observed that all the nail salons around her were Vietnamese-run.

Imagine spending 40 years and more than a billion dollars on a gamble.

That's what one U.S. government science agency did. It's now paying off big-time, with new discoveries about black holes and exotic neutron stars coming almost every week.

When 29-year-old Gilberto Olivas-Bejarano first returned to his birth home, the Mexican city of León, he didn't speak the native language.

"I barely speak Spanish now," he says.

He arrived in León alone, and today, nearly two years since his deportation, Olivas-Bejarano has still not seen his family in person.

As a budding young soprano in the 1990s, Anne-Sophie Schmidt was selected to sing the lead role in an opera conducted by the renowned Swiss conductor Charles Dutoit and the National Orchestra of France. It was a great honor to work with Dutoit, she says.

But then the harassment started.

After one concert, Schmidt says, Dutoit pushed her up against a wall and forcibly kissed and groped her.

Photographer Soumya Sankar Bose remembers how Jatra, a style of folk theater, was popular during his childhood in West Bengal. But 10 years after moving out, Bose returned home to find that Jatra was no longer celebrated nearly as much. The genre's brightest stars, once major celebrities, were fading from view. Even his own uncle, a famous Jatra performer, had to take a job at a train station to make ends meet.