On my latest trip to Walmart, i ran across a new SunChips bag. The new bags say that they are now 100% biodegradable. According to their press release:
PLA is made from lactic acid. Lactic acid is made from dextrose by fermentation. Dextrose is made from starch and starch is made from carbon dioxide and water. Because it’s made with plants that grow annually instead of petroleum (which takes millions of years to form) the impact on greenhouse gases is much lower.
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