NEW YORK - World greenhouse gas markets probably will relax their notions of what constitutes a carbon credit to encourage more people to reduce emissions of planet-warming gases, the head of the Chicago Climate Exchange (CCX) said in an interview. Read more »

Chemicals such as methane and nitrogen, in addition to some farming practices, are making an impact on the environment. However, there are ways to control these and even benefit financially from the changes, experts say. Read more »

Critics and advocates of the emissions trading scheme (ETS) expect a large number of amendments will be needed to shape the final policy. Read more »