<p>There are lots of threads on CC about both those topics.</p>
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<p>Not that you need me to do your own research for you, but here are a couple of sources:
<a href=“http://oberlin.edu/alummag/spring2010/features/scientific.html[/url]”>http://oberlin.edu/alummag/spring2010/features/scientific.html</a>
<a href=“http://oberlin.edu/alummag/winter2009/features/special.html[/url]”>http://oberlin.edu/alummag/winter2009/features/special.html</a></p>