After making "Gorillas in the Mist", Weaver became a supporter of the Dian Fossey Gorilla Fund and is now its honorary chairwoman. She was honored by the Explorers Club for this work, and is considered to be an environmentalist. In October 2006, she drew international attention through a news conference at the start of a United Nations General Assembly policy deliberation. She outlined the widespread threat to ocean habitats posed by deep-sea trawling, an industrial method for catching fish. On April 8, 2008, she hosted the annual gala of the Trickle Up Program, a non-profit organization focusing on those in extreme poverty, mainly women and disabled people, in the Rainbow Room.