Carbon Offsets, a Much-Criticized Climate Tool, Get Federal Guidelines NYT: Science Brad Plumer 28 May 2024 at 08:41 The new principles aim to define βhigh-integrityβ offsets amid concerns that current practices often donβt cut greenhouse gas emissions as claimed. Β© Zinyange Auntony/Agence France-Presse β Getty ImagesSeedlings at a carbon offset partnership in Zimbabwe.