Jeff and Paige return to the museum with their exciting fun-filled concerts that promote love of the outdoors and ecology, while bringing concepts like insect anatomy, energy conservation and plate tectonics to the whole family. If this sounds lofty for the kiddie set, then think again. The messages are delivered in a playful manner with memorable musical hooks that captivate children and adults alike. They will perform two FREE shows at the CU Museum of Natural History at 11 a.m. and 1 p.m. (It's usually less crowded at 1 p.m.)