Russ Schumacher and Alex Trebek filming a recent episode of "Jeopardy." 

(Photo: Courtesy of Russ Schumacher)
A Colorado State University researcher is back on the podium to compete on the game show "Jeopardy!"  

In 2004, Russ Schumacher, who teaches and does research in atmospheric science at CSU, won the show's Tournament of Champions.

This year, Schumacher's been asked to compete in the Battle of the Decades. The competition, which celebrates the show's 30th anniversary, includes the top players from the last three decades. The finals will air in May and the winner will take home $1,000,000. 

Here's Schumacher's winning "Jeopardy!" answer from 2004: 

Around 1900, Monroe Rosenfeld remarked that the music heard around NYC’s 28th Street sounded like this.

Answer:

What is Tin Pans?