From Colombia to Cameroon, tropical nations could soon receive steady financial rewards for preserving their rainforests under a new global initiative launched by Brazil at the COP30 climate summit.

The inauguration of the Tropical Forests Forever Facility (TFFF) is expected Thursday as global leaders meet in the Brazilian Amazon, where this year's U.N. climate negotiations are being held.

Brazil is courting $125 billion from governments and private financiers for a global investment fund that proposes making annual payments to developing countries for every hectare of forest they keep standing.

The scheme has attracted some early interest, but investors have been less forthcoming. Here's what to know about Brazil's centerpiece forest initiative at COP30:

Why is it needed?