The 2000s Nature Challenge, which was established in consultation with the Union of Concerned Scientists encouraged Canadians to reduce home energy use, using energy-efficient appliances and vehicles, drive personal vehicles less by using public transit, biking or walking and by living closer to work or school, buying locally grown food, eat more vegetarian meals, avoid use of pesticides. over 500 000 individuals had taken David Suzuki's Nature Challenge. Many famous Canadians have taken David Suzuki's Nature Challenge, including Nelly Furtado, Sam Roberts, Margaret Atwood, Robert Munsch, Larry Campbell, and David Miller.