New rules allowing wealthy polluting countries to buy carbon-cutting “offsets” from developing nations were agreed at UN climate talks Saturday, a move already raising fears they will be used to greenwash climate targets. New rules allowing wealthy polluting countries to buy carbon-cutting “offsets” from developing nations were agreed at UN climate talks Saturday, a move already raising fears they will be used to greenwash climate targets. Environment Phys.org – latest science and technology news stories