Climate change in Japan and Toyota hybrid electric vehicles were named to have the highest fuel efficiency and lowest emissions. The fuel economy and emissions decrease is due to the advanced technology in hybrid systems, biofuels, use of lighter weight material and better engineering. As a signatory of the Kyoto Protocol, and host of the 1997 conference which created it, Japan is under treaty obligations to reduce its carbon dioxide emissions and to take other steps related to curbing climate change. The Cool Biz campaign introduced under former Prime Minister Junichiro Koizumi was targeted at reducing energy use through the reduction of air conditioning
2016 United Nations Climate Change Conference aim of keeping climate change under an increase of 2 °C between the present day and 2100. The conference opened with a preparatory document on a future COP21 agreement in Paris and by adopting a 37-page text. The 195 countries participating in the conference adopted the first worldwide climate agreement, a binding treaty that aims to limit climate change to a temperate increase of under 2 °C. The convention's attendees can be sorted into one of three categories: parties, observers, or members of the press/media. There are three distinct groups that a nation can be placed in if they are