In the days after President Donald Trump’s announcement to withdraw from the Paris Climate Agreement, more than 1,200 cities, states, universities, and corporations declared, "We are still in." These pledges, which former New York Mayor Michael Bloomberg submitted to the United Nations Framework Convention on Climate Change (UNFCCC), include commitments by over 260 corporations, including PepsiCo and Walmart, to reduce their greenhouse gas emissions in line with the latest science.That was...