With just three days left in office, the Obama administration has doubled an initial $500 million commitment to a fund that helps developing nations fight climate change and adapt to its consequences.
The incoming Trump administration and some Republicans oppose the program.
The State Department's announcement Tuesday brings U.S. contributions to the Green Climate Fund to $1 billion since 2016. The fund helps poor countries reduce carbon emissions by promoting clean energy and spurring private investment in the field.
"This administration has committed to this fund, in fact helped stand it up, establish it," State Department spokesman John Kirby said....