On Earth Day two weeks ago, 171 countries officially signed the Paris Agreement on climate change. In doing so, they agreed to the long term goal of ending humanity’s damage to the climate—that is, reducing our emissions of global warming pollution to zero—in the second half of this century. One encouraging part of the ongoing scientific discussion about how to achieve this ambitious goal, is that we’re finally starting to take seriously the impact of what people eat. Three recent studies show that it makes a big difference, to the climate as well as to our health.
