From one of the top bird-watching sites in the world, where thousands of Sandhill Cranes migrate every spring, members of the Sierra Club assembled for Bob Kerrey.
They say he cares about the natural resources like the site they gathered at, resources they say could be threatened by climate change.
Dave Newell said Kerrey is "willing to try to do something about what could be very disastrous to ag economy in years to come."
Newell and a small group stood on a bridge overlooking the Platte. Behind the small press conference, a handful of supporters held signs with slogans like "Climate change will wreck Nebraska agriculture."
In a year of devastating drought where the Platte River ran dry, these activists from Lincoln say signs of global warming are everywhere.
The League of Conservation Voter's Mary Harding said, "This is clearly, based on science, what Nebraska has coming for it. We need to take action now before it's too late."
Deb Fischer's campaign spokesman calls that a "liberal agenda."
They say Kerrey has been a supporter of cap and trade. The Fischer campaign said that would result in new taxes, that would "increase energy prices and devastate Nebraska families and farmers."
We asked central Nebraskans to weigh in.
Corky calls global warming a "hoax".
Some logged onto Facebook to say it's a natural cycle.
Brian says a simple science class would explain why it's real and man-made.
Now that same discussion will be coming to high schools across the state, as the state Department of Education released new standards this week, calling for climate change to be part of geography classes.
Harding, the Kerrey supporter welcomed that news from the state's schools.
She said, "I think we are living in an age of science and fact and it's very, very important that our young people are well-informed on the facts."
Those new education standards are now up for a review period before becoming finalized. For more, visit http://www.education.ne.gov/standardssurvey/.