His foundation, https://web.randi.org/ , is amazing and has done great work in trying to educate and combat disinformation and abuse.
If you can, watch various presentations by him at colleges etc... He's surprisingly great at entertaining while still discussing very serious topics.
His conferences, called TAM (the amazing meeting), we're fantastic. Got to meet Penn+Teller, Trey Parker and Matt Stone, and several others that were kind and patient with dumb little me. So many smart people in a tiny place.