<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=windows-1250">
<META content="MSHTML 6.00.2900.2912" name=GENERATOR></HEAD>
<BODY>
<DIV dir=ltr align=left> </DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> CANAchat@yahoogroups.com
[mailto:CANAchat@yahoogroups.com] <B>On Behalf Of </B>Julie-Anne Richards
CANA<BR><B>Sent:</B> Monday, 31 July 2006 6:55 PM<BR><B>To:</B>
canachat@yahoogroups.com<BR><B>Subject:</B> [CANAchat] biodiesel beats
ethanol<BR></FONT><BR></DIV>
<DIV></DIV>an interesting article that I missed earlier in the month (sorry if
everyone else already caught it), the clincher:<BR><BR>"Even if the US devoted
all its corn to ethanol and all its soybeans to biodiesel production – which
would cause widespread food shortages – the resulting biofuels would cover less
than 5% of US gasoline and diesel fuel needs, they calculate."<BR><BR><BR>
<H4><B>Biodiesel beats ethanol in biofuel battle</B></H4>
<UL>
<LI>22:00 10 July 2006
<LI>NewScientist.com news service
<LI>Bob Holmes </LI></UL>In the battle of environmentally friendly biofuels for
cars and trucks, biodiesel beats ethanol hands down, new research concludes –
but neither will go very far toward reducing the demand for petroleum.
<BR><BR>Both ethanol biofuel, made from corn, and biodiesel, made from soybeans,
have been touted as alternative fuels that can reduce greenhouse gas emissions,
because they remove carbon dioxide from the atmosphere as they grow. <BR><BR>But
making these fuels takes a lot of oil – to make and run farm machinery, to
produce pesticides and fertilisers, and to process the harvest into fuel. Some
sceptics have argued that the emissions produced are so high that using biofuels
may not reduce overall emissions at all. <BR><BR>To test whether these two
biofuels are viable, David Tilman, an ecologist at the University of Minnesota,
US, and his colleagues calculated the total environmental costs of their
production. When all these costs are factored in, corn-based ethanol does indeed
reduce greenhouse gas emissions, but only by about 12% compared to gasoline,
they found. <BR><BR>In contrast, biodiesel reduces emissions by 41% over diesel
fuel, largely because it does not need distillation to be processed into fuel.
Also, far fewer fertilisers and pesticides are used in growing soybeans, giving
biodiesel a further edge in reducing environmental impact.<BR><BR>
<H5><B>Food or fuel?</B></H5>But all this is barely a splash in the tank of
energy demand. Even if the US devoted all its corn to ethanol and all its
soybeans to biodiesel production – which would cause widespread food shortages –
the resulting biofuels would cover less than 5% of US gasoline and diesel fuel
needs, they calculate. <BR><BR>"Those two sources are always going to be minor
supplies of those fuels," says Tilman. "Turning what is already a globally
limited quantity of food into energy is not a very good option in the long
term."<BR><BR>A better solution in the long run, Tilman suggests, is to produce
ethanol from non-food sources such as prairie grasses and woody plants. Such
"cellulosic" ethanol may offer much greater reductions in greenhouse gas
emissions. <BR><BR>Indeed, the US Department of Energy released a report on
Friday endorsing cellulosic ethanol as a way to replace 30% of US petroleum
fuels by 2030. <BR><BR>"To make big inroads, clearly we will need cellulosic
ethanol," says Daniel Kammen, who directs the Renewable and Appropriate Energy
Laboratory at the University of California at Berkeley, US. "That is where the
greenhouse gas savings are. That is where we need to push, innovate and
invest."<BR><BR>Journal reference: <I>Proceedings of the National Academy of
Sciences</I> (DOI: 10.1073/pnas.0604600103)<BR><BR><X-SIGSEP>
<P></X-SIGSEP>Julie-Anne Richards<BR>Coordinator<BR>Climate Action Network
Australia<BR><BR>p: 02 8202 1215<BR>f: 02 9281 1060<BR>m: 0407
227 633<BR>e: coord@cana.net.au<BR><BR><A href="http://www.cana.net.au/"
eudora="autourl">www.cana.net.au<BR></A>Level 13, 235 Jones St, Ultimo
NSW 2007 <SPAN style="COLOR: white" width="1">__._,_.___</SPAN> <!-- |**|begin egp html banner|**| --><IMG height=1
src="http://geo.yahoo.com/serv?s=97476590&grpId=10364608&grpspId=1600948926&msgId=2982&stime=1154336150"
width=1 NOSEND="1"> <BR><!-- |**|end egp html banner|**| --><!-- |**|begin egp html banner|**| --><BR><BR></P>
<DIV
style="MARGIN-BOTTOM: 1px; WIDTH: 500px; COLOR: #909090; TEXT-ALIGN: right"><TT>SPONSORED
LINKS</TT> </DIV>
<TABLE cellSpacing=13 cellPadding=0 width=500 bgColor=#e0ecee>
<TBODY>
<TR vAlign=top>
<TD style="WIDTH: 25%"><TT><A
href="http://groups.yahoo.com/gads;_ylc=X3oDMTJkZDI5aGY1BF9TAzk3NDc2NTkwBF9wAzEEZ3JwSWQDMTAzNjQ2MDgEZ3Jwc3BJZAMxNjAwOTQ4OTI2BHNlYwNzbG1vZARzdGltZQMxMTU0MzM2MTUw?t=ms&k=Global+warming&w1=Global+warming&w2=Global+warming+prevention&w3=Global+warming+issue&w4=Global+warming+problem&w5=Global+warming+skeptics&c=5&s=134&g=0&.sig=19s0Dvfyje5U2oqcuuz7eA">Global
warming</A></TT> </TD>
<TD style="WIDTH: 25%"><TT><A
href="http://groups.yahoo.com/gads;_ylc=X3oDMTJkbGJldWRmBF9TAzk3NDc2NTkwBF9wAzIEZ3JwSWQDMTAzNjQ2MDgEZ3Jwc3BJZAMxNjAwOTQ4OTI2BHNlYwNzbG1vZARzdGltZQMxMTU0MzM2MTUw?t=ms&k=Global+warming+prevention&w1=Global+warming&w2=Global+warming+prevention&w3=Global+warming+issue&w4=Global+warming+problem&w5=Global+warming+skeptics&c=5&s=134&g=0&.sig=IwLjqCmydbPePiDFgagBEA">Global
warming prevention</A></TT> </TD>
<TD style="WIDTH: 25%"><TT><A
href="http://groups.yahoo.com/gads;_ylc=X3oDMTJkZzE5bzA0BF9TAzk3NDc2NTkwBF9wAzMEZ3JwSWQDMTAzNjQ2MDgEZ3Jwc3BJZAMxNjAwOTQ4OTI2BHNlYwNzbG1vZARzdGltZQMxMTU0MzM2MTUw?t=ms&k=Global+warming+issue&w1=Global+warming&w2=Global+warming+prevention&w3=Global+warming+issue&w4=Global+warming+problem&w5=Global+warming+skeptics&c=5&s=134&g=0&.sig=oCFph83rFw4E_qbmn3Hg6g">Global
warming issue</A></TT> </TD></TR>
<TR vAlign=top>
<TD style="WIDTH: 25%"><TT><A
href="http://groups.yahoo.com/gads;_ylc=X3oDMTJkYWwxYm5rBF9TAzk3NDc2NTkwBF9wAzQEZ3JwSWQDMTAzNjQ2MDgEZ3Jwc3BJZAMxNjAwOTQ4OTI2BHNlYwNzbG1vZARzdGltZQMxMTU0MzM2MTUw?t=ms&k=Global+warming+problem&w1=Global+warming&w2=Global+warming+prevention&w3=Global+warming+issue&w4=Global+warming+problem&w5=Global+warming+skeptics&c=5&s=134&g=0&.sig=hvnPFX4a4AHzLy3Qp3PZbA">Global
warming problem</A></TT> </TD>
<TD style="WIDTH: 25%"><TT><A
href="http://groups.yahoo.com/gads;_ylc=X3oDMTJkanNkbzNzBF9TAzk3NDc2NTkwBF9wAzUEZ3JwSWQDMTAzNjQ2MDgEZ3Jwc3BJZAMxNjAwOTQ4OTI2BHNlYwNzbG1vZARzdGltZQMxMTU0MzM2MTUw?t=ms&k=Global+warming+skeptics&w1=Global+warming&w2=Global+warming+prevention&w3=Global+warming+issue&w4=Global+warming+problem&w5=Global+warming+skeptics&c=5&s=134&g=0&.sig=UUy6PhbQubS3weG7O8-QTw">Global
warming skeptics</A></TT> </TD></TR></TBODY></TABLE><!-- |**|end egp html banner|**| --><!-- |**|begin egp html banner|**| --><BR>
<DIV style="WIDTH: 500px; COLOR: #909090; TEXT-ALIGN: center">
<HR style="WIDTH: 500px; BORDER-BOTTOM: 1px; TEXT-ALIGN: left">
<TT>YAHOO! GROUPS LINKS</TT> </DIV><BR>
<UL><TT>
<LI type=square> Visit your group "<A
href="http://groups.yahoo.com/group/CANAchat">CANAchat</A>" on the
web.<BR> </TT> <TT>
<LI type=square> To unsubscribe from this group, send an email
to:<BR> <A
href="mailto:CANAchat-unsubscribe@yahoogroups.com?subject=Unsubscribe">CANAchat-unsubscribe@yahoogroups.com</A><BR> </TT>
<TT>
<LI type=square> Your use of Yahoo! Groups is subject to the <A
href="http://docs.yahoo.com/info/terms/">Yahoo! Terms of Service</A>.</TT>
</LI></UL><BR>
<DIV style="WIDTH: 500px; COLOR: #909090; TEXT-ALIGN: center">
<HR style="WIDTH: 500px; BORDER-BOTTOM: 1px; TEXT-ALIGN: left">
</DIV><BR><!-- |**|end egp html banner|**| --><SPAN
style="COLOR: white">__,_._,___</SPAN> <BR>
<P><FONT size=2>--<BR>No virus found in this incoming message.<BR>Checked by AVG
Free Edition.<BR>Version: 7.1.394 / Virus Database: 268.10.5/404 - Release Date:
31/07/2006<BR></FONT></P></BODY></HTML>
<BR>
<P><FONT SIZE=2>--<BR>
No virus found in this outgoing message.<BR>
Checked by AVG Free Edition.<BR>
Version: 7.1.394 / Virus Database: 268.10.5/404 - Release Date: 31/07/2006<BR>
</FONT> </P>