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
Climate change adaptation change agreement, commits developed countries to goal of sending $100 billion per year to developing countries in assistance for climate change mitigation and adaptation through 2020. This agreement, while not binding, would dwarf current amounts dedicated to adaptation in developing countries. This climate change fund is called the Green Climate Fund from the 2010 United Nations Climate Change Conference. Many developing countries prioritize economic development over addressing the issue of climate change, as they are more concerned about pre-existing problems such as poverty, malnutrition, food insecurity, availability of drinking water, indebtedness, illiteracy, unemployment, local resource conflicts, and lower technological development.