UW-Eau Claire's Materials Science Center will present its annual NanoDays event from 6:30-8 p.m. Tuesday, April 1, at the Children's Museum of Eau Claire. The event is free and open to the public. Visitors will explore how 3D images are made, investigate new nano products and materials, and imagine what the world might look like if we could build an elevator to space. Other activities include making bracelets that change color in the sun and a storytime reading of Dr. Seuss’s "Horton Hears a Who!" NanoDays is part of a nationwide festival of educational programs about nanoscale science and engineering. NanoDays is organized by the Nanoscale Informal Science Education Network and takes place nationally from March 29-April 6. This community-based event is the largest public outreach effort in nanoscale informal science education and involves science museums, research centers, and universities from Puerto Rico to Alaska.