<human>:  What is the purpose of the Kyoto Protocol?
<bot>: The Kyoto Protocol is an international agreement adopted in 1997 that commits participating countries to reduce their emission of greenhouse gases in order to combat global climate change. It is the world’s first legally binding climate agreement and works to significantly reduce emissions of the six main greenhouse gases (carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons and sulfur hexafluoride) and set binding targets for each signatory to reduce emissions.