Photo: cafenut, Flickr
Back in July, we reported on supermarkets using solar panels, something Fresh & Easy Neighborhood Market was early to adopt; now they've got yet another cool tool up their green sleeves: CO2 refrigeration. We know, CO2 hardly screams "good for the ozone," but the technology actually earned the chain a GreenChill certification from The U.S. Environmental Protection Agency (EPA).
Here's why: Compared to standard refrigeration units, the system is estimated to drastically reduce the store's carbon footprint. That's because standard units are made with a potent greenhouse gas, hydrofluorocarbons (HCFC) -- 1,400 times more damaging to the environment than naturally occurring CO2. The EPA says that most refrigeration units in the U.S. use HCFCs in "direct expansion systems," which are typically "charged with 3,000 to 4,000 pounds of refrigerant and can leak in excess of 20 percent each year."
I haven't seen An Inconvenient Truth yet, so I don't know if Al Gore covers this, but it looks like one of the biggest contributors to global warming is the food we eat and the processes that give us that food.
A few months ago Nick mentioned that 


