Clint Parry looked through every part of his kitchen during the stay-at-home period in Detroit, Michigan. He was looking for different foods and leftovers to put together meals. The 33-year-old man is one of many people around the world who has cut food spending and waste during the COVID-19 pandemic. Experts say if these new behaviors continue, they will help fight another worldwide crisis: climate change. Parry works as a model builder for a company in Michigan. He told the Reuters news agency that he and his wife have been finding use for all of their leftovers. In the past, they would forget to bring that food into work and instead buy fast food for lunch. The United Nations Food and Agriculture Organization estimates that one-third of the world’s food is wasted every year. That waste is responsible for about eight percent of the world’s greenhouse gases.