Archive for March, 2011

Soup Can BPA Lined Organic Tin Vegetables
Image credit: Steven Depolo, used under Creative Commons license.

Dear Pablo: Can a USDA certified organic can of vegetables still be considered organic if it is in a BPA-lined can?

There are really two questions here: whether or not the USDA consider food packaged in BPA-lined cans organic and; whether or not we should consider food packaged in BPA-lined cans organic. First we need to figure out what BPA is for those that have never heard of it, then we need to look at the USDA National Organic Program’s standards, and finally, we need to answer the question: Even if it is allowed for organic food packaging, do we want to feed it to our children, our selves, or even our pets?… Read the full story on TreeHugger

house four seasons photo summer winter spring fall
Image credit: victoriafee, used under Creative Commons license.

Dear Pablo: Air conditioning uses a lot of energy but I am wondering if it is actually better (more sustainable) to live somewhere hot, where you need AC, or somewhere cold, where you need to heat?

This is a great question. Living closer to the poles comes with long, cold winter nights and requires a lot of heating while living closer to the equator often comes with unbearable heat that demands air conditioning. Overcoming the extremes of outside temperature involves either adding heat, typically with open combustion in a natural gas or oil-burning furnace, or removing it by means of an air conditioner’s heat pump. Let’s take a look at which could be a more sustainable option…. Read the full story on TreeHugger

 
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