Butterfly preservation and solar cooking are the topics for the next free Living Green events in Mesa. Conserving the Monarch Migration through Arizona will be presented Wed., March 12 from 6:30pm to 7:30pm at Mesa Main Library, 64 E. 1st St. Cooking with the Sun: The Art and Science of Solar Cookers will be presented Sat., March 15 from 1pm to 3pm at Mesa Urban Garden, 212 E. 1st Ave.