What is the summary of Peter Singer's argument on the relationship between famine, affluence, and morality?

Peter Singer argues that individuals in affluent societies have a moral obligation to help those suffering from famine in impoverished regions. He believes that people should prioritize saving lives over material possessions and that we have a duty to alleviate the suffering of others, even if it requires significant sacrifices on our part. Singer's argument is based on the principle that all lives have equal value and that we should act to prevent unnecessary suffering whenever possible.