John Tierney cites research evidence coupled with IHHO and relays his conclusions on some conventional wisdoms about what's ethical and not in today's New York Times. He's got 10, but here's a sampling:
Debate
1. paper v plastic bags?
Answer: plastic
Why? less energy to produce, transfer, easier to recycle, less space in landfills
2. is saturated fat good or bad?
Answer: good
Why? recent study in Israel reveals people who consumed more saturated fat than control group lost more weight
3. local or far away fruit?
Answer: far away
Why? more efficient distribution
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