Poor countries need trillions of dollars to go green. A long-shot effort aims to generate the cash

A large, long-shot effort is being developed to mobilize money to save Planet Earth. Climate finance experts say trillions of dollars are needed for forestry projects and renewable energies like solar and wind in the developing world, all aimed at slashing pollution from the burning of oil, gas and coal, which cause climate change. The price tag is eye-watering: Investment in energy-transition technologies were $1.3 trillion last year, according to the International Renewable Energy Agency, an intergovernmental group, and that needs to at least quadruple to avoid a level of warming that scientists say would be catastrophic.