World U.S. to Provide $500 Million for Green Bonds, Yellen Says November 3, 2021November 3, 2021Lisa Friedman and Eshe NelsonComments Off on U.S. to Provide $500 Million for Green Bonds, Yellen Says Ms. Yellen said wealthy countries had pledged billions of dollars to tackle climate change, but the real cost is in the trillions.