sentences:  On 4 January 2013, Greive joined celebrated primatologist Dame Jane Goodall, along with fellow wildlife conservationist and American screen legend Betty White, on stage at the Warner Grand Theater, in San Pedro, California, to raise money for the Jane Goodall Institute.In 2016 Greive rewrote Ogden Nash's humorous verse for The Carnival of the Animals (Le carnaval des animaux) for an all-Australian themed production of Camille Saint-Saens's classic work performed by the Tasmanian Symphony Orchestra, entitled The (Australian) Carnival of the Animals.Shortly after retiring from his career as a paratrooper in 1993, Greive worked in several entry-level positions in the advertising, modelling and service industries which he has described as "creatively enlightening".