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 in Washington drive and make alternatives to drive more attractive. Also incentives to purchase hybrid cars, use biodiesel, and other climate friendly alternatives will greatly reduce fossil fuel dependence and use. Forbes magazine ranked Washington State the fifth best state in the nation for business, and 3rd for environmental quality. The emerging "green economy" (green collar jobs) designed to achieve efforts toward low carbon and sustainability is anchored by clean energy. WA is a national leader in addressing climate change and has taken steps to reduce its climate impact, and as a result opportunities for growth in the economy have been generated.