… of hope that the negative effects of climate change can still be reversed in time to head off a looming disaster. Co-hosted by the MGH Institute of Health … steps, he said, but just a start. “We cannot stop global warming one Tesla at a time, or by eating vegan food four times a week,” he said, pointing to record … environmental, economic, public health, national security, and moral issue of our time. “In 2021 alone, 40 percent of Americans—nearly 132 million people all across …