Christina Cala

The busiest section of the U.S.-Mexico border is the Rio Grande Valley. It's not unusual for Border Patrol agents to catch more than 500 immigrants a day trying to cross into the U.S. along this 55-mile stretch. In spite of increased border security and rising costs to cross, migrants are still determined to make the journey.

NPR recently spent time on both sides of the border, where immigration is part of everyday life.

Nnamdi Ogbonnaya has eclectic taste, and you can hear it in his music. "I have a very Muppet-like energy when I talk that can go from zero to 100, real fast," the rapper says.

Durand Jones & The Indications started as a side project between a few music students at Indiana University's Jacobs School of Music. Their intention was to play for one night only. With a $452.11 recording budget (including beer) and an American Idol-branded toy microphone, they recorded the songs that would become their 2016 self-titled debut.

Fiona the hippo may be one of the greatest living social media stars of the decade, but in terms of those who aren't living, look no further than Sue the Tyrannosaurus rex.

Though she's a fossil, Sue is a true Chicagoan and has been on display in her home at The Field Museum since 2000.

Like many of us these days, Sue is sassy and shares her hot takes on Twitter with adoring fans.