UA junior faculty conduct a speed-facts forum about sustainable technologies, and the scientists and educators of The Physics Factory give demonstrations that seem like magic from 11 a.m. to 2 p.m., Saturday, April 16. Krisitn Wisneski of the UA school of Natural Resources and the Environment leads a presentation from 11 a.m. to 2 p.m., Saturday, April 23. Free with admission: $20 adult; $18 senior, AAA member and military; $13 child age 6 to 12; $10 UA student or faculty with Catcard. Call for more information.