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 South Korea dependent on manufacturing which emits a lot of carbon dioxide. Also, it will eventually increase the production cost, resulting in South Korean companies to becoming less competitive then than other global companies. Therefore, Korean companies are now investing in developing new technology that will effectively reduce CO_2 while also constructing a cooperation agreement to share its new technologies and reinforce its eco-friendly campaign. Green IT is a response to climate change and energy savings that will solve the pending issues between the other countries involved in the campaign. Therefore, countrywide comprehensive and systematic policy formulation and project implementation is needed.