This is good news for the planet and for health care: Americans are eating less beef than they did a decade ago. During that time, they also stopped eating as much pork, chicken, shellfish and whole milk—but not at nearly the same rate of decline as with beef. According to a new report by eating less beef, Americans prevented the equivalent of 185 million metric tons of greenhouse gasses from entering the atmosphere and contributing to global warming. And eating less red meat will decrease the incidence of heart disease while supporting overall health.