What can you do to make the world a little bit greener?

Will a duet partner be part of Maren's special day?

"I know we're going to grow together, age together, laugh & cry together."

The trio join Blake Shelton and Sam Hunt on the bill.

Last night's show features some great crossover moments.

Urban received the BMI Champion Award on Tuesday, Nov. 7.

The cuddly clip was filmed at Hurd's lakefront house in Michigan.

The pair got engaged back in July, and are busy planning for a spring 2018 weeding.