From Kyoto to Copenhagen
The first binding climate treaty and its limitations, culminating in the dramatic failure at Copenhagen.
The Kyoto Protocol
The 1997 Kyoto Protocol was the first treaty to set legally binding emission reduction targets. It required 37 industrialized countries (Annex I parties) to reduce emissions an average of 5% below 1990 levels by 2008-2012.
Kyoto had critical limitations. The US signed but never ratified it (the Senate voted 95-0 against, citing the exemption of developing countries). Canada ratified but withdrew in 2011 rather than pay penalties for missing targets. China and India, classified as developing countries, had no binding targets — even as China surpassed the US as the world's largest emitter in 2006.
Despite these limitations, Kyoto created important institutional infrastructure: carbon trading mechanisms, the Clean Development Mechanism, and the practice of national reporting and verification. Many European countries did meet their targets.