Overview: Japan has committed to becoming carbon neutral by 2050. To honor this commitment, Japan's railway companies have begun various initiatives to reduce greenhouse gas emissions. JR East is now testing a hydrogen hybrid train powered by fuel cells, and JR Central is working on a next-generation biodiesel fuel train. Other private railway companies have also begun using renewable energy sources to run their trains and stations. See how the railway industry is making things greener by researching and developing the latest technologies.