English URLs

http://www.lafn.org/~dave/trans/energy/does_mt_saveE.html
http://www.cas.usf.edu/philosophy/mass/Stephanie.html
http://www.fumento.com/masstransit.html
methane
http://www.nature.com/nsu/000907/000907-6.html
http://www.publish.csiro.au/ecos/Ecos88/Ecos88B.htm
http://exn.ca/Stories/2000/04/12/56.asp http://www.science.siu.edu/microbiology/micr425/425Notes/10-Methane.html http://www.aim.org/publications/briefings/2001/30july2001.html
http://www.enn.com/direct/display-release.asp?id=2132
http://www.planetarybiology.com/biosynthesis/biosynth13.htm
http://utenti.tripod.it/p_potenza/replies5.html
http://www.abc.net.au/bloke/log/s326379.htm
http://www.gfdl.noaa.gov/~tk/climate_dynamics/climate_impact_webpage.html
http://www.epa.gov/methane/
http://sks.sirs.com/cgi-bin/hst-article-displayid=SDANIELHAND01730&artno=0000011715&type=ART&shfilter=U&key=cow%20methane&res=Y&ren=N&gov=N&lnk=N&ic=N
http://www.epa.gov/methane/sources.html
http://www.cs.ntu.edu.au/homepages/jmitroy/sid101/uncc/fs271.html
http://www.bts.gov/publications/national_transportation_statistics/2005/html/table_04_05.html
http://www.arap.org/adlittle/2.html
http://www.volvocars.com/AboutVolvo/CorporateCitizenship/Scorecard/_scorecard_C5.htm