Recently the fuel ethanol production from crops has attracted much attention not only in the US, EU and Brazil, but also in Japan because the bio-ethanol is perceived as being "carbon neutral" and useful as a countermeasure against global warming.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/validity-bio-ethanol-countermeasure-against-global-warming
[2] http://admin.indiaenvironmentportal.org.in/category/author/satoshi-matsuda
[3] http://admin.indiaenvironmentportal.org.in/category/journal/journal-environmental-information-science
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carbon-dioxide
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/alternative-fuels
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ethanol
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/global-warming
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-mitigation
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/energy-policy
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/energy
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/japan