©2015 Bloomberg News NOBABP6KLVR7 (Bloomberg) — Wal-Mart Stores Inc. will offer a $50-a-year unlimited free-shipping service for online customers starting this summer, seeking to challenge the $99 Prime service offered by retail rival Amazon.com Inc. The service will be available by invitation only in select markets, said Ravi Jariwala, a spokesman

For a while there it really seemed like alternative energy was going to save us all.  Some experiments produced phenominal results, the politicians were slowly coming around and a couple of massive oil spills had Big Oil reeling in the court of public opinion.  But here we are on the