Negotiators are fighting over three big parts of the money issue: how big the numbers are, how much is grants or loans, and who pays.

Big money to respond to climate change is key to the United Nations talks underway in Azerbaijan BAKU, Azerbaijan — Just as a simple lever can move heavy objects, rich nations are hoping another kind of leverage — the financial sort — can help them come up with the money that poorer nations need to cope with climate change.

The COP29 climate talks in Azerbaijan aim to agree an annual finance target of $1 trillion or more a year to help poorer countries respond to global warming. Some see new taxes as one way to get there.

Small farmers get less than 1% of climate finance, according to a report last year from the Climate Policy Initiative. At the same time, food systems — all the processes involved in making, shipping and disposing of food — account for about a third of planet-warming greenhouse gas emissions.