tool for conservation include Boone and Crockett Club, The National Wildlife Federation, The Wilderness Society, The Izzaak Walton League of America, North American Wildlife Foundation, Outdoor Writers Association of America, Ducks Unlimited, World Wildlife Fund, The American Forestry Association, Wildlife Legislative Fund of America, Wildlife Management Institute, The Wildlife Society, and IUCN. The President of Panthera, a conservation group for big cats and their ecosystems, argues that trophy hunting gives African governments economic incentives to leave safari blocks as wilderness, and that hunting remains the most effective tool to protect wilderness in many parts of Africa. Neutrality Organizations that are neutral and do not oppose trophy hunting include The National Audubon Society, Defenders of Wildlife, and The Sierra Club. Proposed solutions Certificate system The development of a certification system, whereby hunting operators are rated on three criteria, would help alleviate shortcomings in the industry: Their commitment to conservation, e.g. by adhering to quotas and contributing to anti-poaching efforts. How much they benefit and involve local people. Whether they comply with agreed ethical standards. Challenges to the certificate system Introducing a certification system however remains challenging because it requires co-operation between hunting operators, conservationists and governments. It also requires difficult questions to be answered, including; what constitutes ethical hunting? Who constitutes local communities and what represents adequate benefits for them? Some researchers also continue to express concern that allowing trophy hunts for endangered animals might send the wrong message to influential people around the world, perhaps with adverse consequences for conservation. For example, it has been suggested that people will contribute less money to conservation organizations because allowing hunting of a species could suggest that it does not need saving. In the media The controversy surrounding trophy hunting was further ignited when an American dentist Walter Palmer gained internet infamy when a picture of him and the dead lion Cecil went viral. Palmer is an experienced and avid big-game hunter and reportedly paid over 50,000 US dollars to hunt and kill the lion. Cecil the lion was one of the most known and studied lions in Zimbabwe. The lion was lured from the park and, after being injured by an arrow and stalked for 40 hours, Cecil was finally killed. Palmer was reportedly attracted to Cecil's rare black mane. Had Cecil been in the park, it would have been illegal to kill him. The actions the dentist and his hired hunter