Conversation so far:
What charities did Joe Walsh work with?
Walsh's love of Santa Cruz Island grew into a lifelong commitment to conserve the environment there, and he has been active in preserving the island's parks.
What does he do to help conserve the environment in Santa Cruz?
He is President of the Santa Cruz Island Foundation, and has served on the Foundation's board since the 1980s.

Question: What other charities is he involved with?
Self-contained rewrite: What charities other than  Santa Cruz Island Foundation is Joe Walsh involved with?