whatever experts in culturally independent communication they are getting to do it totally deserve the funding
Some of those "experts" proposed genetically engineering a bioluminescent breed of dogs to detect when radiation is nearby, and making viral pop songs about "when the dog starts glowing, run very far away"...
I think some of them got a little too imaginative. Sometimes you think so abstractly that you miss the obvious.
For instance, Carl Sagan suggested we simply mark them with a skull and crossbones, which every organism with an endoskeleton can recognize as a symbol for "death" and thus "danger."