Photo Source: Carlos Aviles / jpgmag.com When Dow Chemical Co . decides to get into the algae biofuel business, it’s a sure sign that algae as a go-to alternative and renewable energy source has entered the big leagues. Dow this week said it is hooking up with Algenol Biofuels Inc . to construct and operate a pilot-scale algae-based integrated biorefinery that will convert CO2 into ethanol. The planned location covers 24 acres at a Dow site in Freeport, Texas. Financial details of the dea