President Joe Biden speaks in the Oval Office at the White House April 19, 2021 in Washington, D.C. Credit: Doug Mills-Pool/Getty Images For poor nations that contributed little to greenhouse gas emissions but are bearing some of the worst impacts of climate change, the most important pledges at this week’s White House summit will be about money. Under President Donald Trump, the United States reneged on $2 billion of its $3 billion commitment to the United Nations’ fund to help developing nations adapt to a changing climate and transition to a carbon-neutral future. So when President Joe Biden convenes world leaders Thursday in a virtual summit on climate change that is meant to demonstrate a U.S. return to leadership, his credibility may hinge on his actions on international climate aid and finance. At issue is both the delinquent U.S. contribution to the United Nations’ Green Climate Fund, and a […]