"Many people think we shouldn't worry about this. Some people hold speciesist views according to which we should only care about what happens to human beings. Others hold environmentalist positions that entail that we should just care about the conservation of ecosystems or species and disregard the interests of individual nonhuman animals. According to those holding these views, nonhuman animals can be sacrificed for the sake of environmental conservation (though, interestingly, they seldom maintain this view when human beings are affected). However, if we agree that the interests of all sentient animals must be taken into account we should reject these anthropocentric and environmentalist views as speciesist."