Andre Geim gave a speech a year before he won the Nobel prize in Boston. When asked about the commercial applications of graphene, he told a joke about people aboard a cruise ship on the mediterranean. The sun was setting and golden and there were a large pod of dolphins playing near the boat, jumping out of water in sync from time to time, everybody on board was silent and utterly absorbed by the sheer beauty of this scene. Then, suddenly a boy shouted out "Mom, can we eat them?"
I guess its time the eat the dolphins now. :)