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  &lt;span class=&quot;section&quot;&gt;Sci/Tech&lt;/span&gt;
  | &lt;span class=&quot;byline&quot;&gt;Benjamin Madueme&lt;/span&gt;
  
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      &lt;p&gt;Carnegie Mellon researchers have released new findings claiming that the use of battery electric vehicles (BEVs, or &ldquo;all-electric vehicles&rdquo;) and plug-in hybrid electric vehicles (PHEVs) with large battery packs today are actually more expensive in the long run. &lt;/p&gt;

&lt;p&gt;The research conducted by Jeremy Michaelek, a professor in the departments of mechanical engineering and engineering and public policy, and his colleagues also suggests that BEVs and PHEVs offer diminishing returns on social benefits per dollar spent as compared to conventional hybrid electric vehicles (HEVs) and PHEVs with small battery packs. A summary of their findings was recently published in the  scientific journal &lt;em&gt;Proceedings of the National Academy of Sciences&lt;/em&gt;.&lt;/p&gt;

&lt;p&gt;The researchers&rsquo; conclusions came after an in-depth assessment into a wide range of factors influencing the aggregate costs and environmental impact of BEVs, including greenhouse gas emissions from electricity generation, gas prices, the financial and ...&lt;/p&gt;

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      &lt;strong&gt;
        Read the full article
        &lt;a href=&quot;http://thetartan.org/2011/10/10/scitech/plugin&quot;&gt;online&lt;/a&gt;.
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