In the middle of the Ohio River, visible from I-65 and Louisville’s Portland neighborhood, is a tiny island called “Shippingport.”

You can drive to the base of the island, but you’ll be met with an array of “no trespassing” signs and wire gates.

And Curious Louisville listener Ruby Fields wanted to know what was behind them.

If you’re driving down I-64, and happen to look out over the Ohio River, you may catch a glimpse of a house-like structure on top of the 14th Street Bridge.

It’s small -- barely noticeable -- but a lot of people have questions about it. Including our latest Curious Louisville listener.

WFPL’s Ashlie Stevens has more.

Over the last couple years, WFPL's Curious Louisville has received nearly a dozen questions about Louisville recycling. People want to know what happens after it leaves the curb, where it all goes, and how a 2017 Chinese policy impacts recycling in Kentucky.

In this installment of Curious Louisville, WFPL’s Energy & Environment Reporter Ryan Van Velzer visits the largest recycling center in Louisville to answer one of our most commonly asked questions.

Traffic signals: you barely notice them until they’re not working.

But what actually causes them to malfunction?

That's what a Curious Louisville listener wanted know; As WFPL's Amina Elahi found out

What do Paul McCartney, Betty White and Muhammad Ali have in common?

All three, along with about 100,000 other people, have been given the title “Kentucky Colonel.”

But how does one gain the honor? That was listener Patrick Grantz’s question for Curious Louisville -- and our resident Kentucky Colonel, broadcast managing editor Rick Howlett, has the answer:

If you listen to our sister station WFPK, or attended Forecastle in 2016, you’ve probably heard of Pokey LaFarge

He’s an artist whose music, as NPR’s Stephen Thompson once said, “evokes the old-timey spirit of a thousand crackling 78 RPM records.”

LaFarge is based in St. Louis, but lived in Louisville for a time, which is what inspired his 2015 song “Home Away From Home” -- and our latest Curious Louisville question from listener Troy Richardson.

WFPL’s Ashlie Stevens has more:

Earlier this month, Curious Louisville asked what questions you have about the JCPS audit and possible state takeover. You sent us more than 50 in the first 24 hours, and we realized we’d need to dedicate some extra time to answer them all.

Here's our hour-long news special, hosted by Kentucky Public Radio’s Ryland Barton and WFPL education reporter Roxanne Scott.

Curious Louisville asked for your questions about the JCPS audit -- and you had lots of questions! In today’s edition, we take a look at the Jefferson County Teachers Association--also known as JCTA or the teachers union--to answer this question from former teacher, Paul Downs:

"With JCTA and JCPS set to renegotiate a new contract for teachers this summer, what happens if the state takes over and the contract has not yet been negotiated?"

WFPL's Laura Ellis and Roxanne Scott have the answers... lots of them.

Last month, the Kentucky Department of Education released an audit recommending the state take over Louisville’s public school system. Curious Louisville asked for your questions about the audit.

Shawn Carroll and Karen Rippy wanted to know if there had been other state-takeovers in Kentucky. And if so, how were they working out?

Ashlie Stevens talked to Kentucky Public Radio's Ryland Barton for the answer.

As part of Curious Derby, we’ve reported on horse safety, injuries and even deaths while racing.

But this caused Rob Harris from Louisville to wonder: "What happens to race horses once they retire, winners or not?"

WFPL’s Ashlie Stevens went to a farm that specifically houses older thoroughbreds to find out the answer: