Might be better to cite sources with incendiary comments like this: <a href="http:&#x2F;&#x2F;www.bloomberg.com&#x2F;bw&#x2F;stories&#x2F;2006-09-24&#x2F;nike-goes-for-the-green" rel="nofollow">http:&#x2F;&#x2F;www.bloomberg.com&#x2F;bw&#x2F;stories&#x2F;2006-09-24&#x2F;nike-goes-for...</a><p>No idea if they tried to &quot;conceal&quot; that though. Seems to be around the same time CFCs were used in refrigeration.