A joint event, with the theme Green Planet, Green Future
, takes place from 9 a.m. to 2 p.m., Sunday, April 21. The Earth Festival features competitions for the best model solar race car and solar house. Kits are available at swetucson.org/solar.
The Water Festival features theater and dance performances, workshops, music, live art "happenings," a mermaid and children's activities. Community groups and businesses host displays and exhibits for both events. Visit tucsonearthday.org
for more information.