Chain Reaction is the mushroom cloud sculpture by former L.A. Times cartoonist/Pulitzer prize-winner Paul Conrad. A monument to peace, it has graced Santa Monica's Main Street since 1991. The city cannot fund the repairs now needed to restore its safety and durability, and is looking to volunteers for support. Please send contributions to Santa Monica Arts Foundation, c/o City of Santa Monica Cultural Affairs Division, CHAIN REACTION, P.O. Box 2200, Santa Monica, CA 90407-2200.