Scientists in Japan are developing low-friction trains that could save energy as well as reduce pollution. They are using the
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/eco-friendly-trains
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/down-earth
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rail-transport
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/industry
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/technology