
Are you an apple or a pear? A small study published in the Journal of the American Medical Association compared obese adults who have an apple-shaped body and carry weight around the midsection with obese folks who have a pear-shaped body and carry weight around the hips. They found that people with apple-shaped bodies, who tend to secrete higher levels of insulin, did best on a low-glycemic-load diet that restricts carb-heavy foods like pasta; they lost an average of 13 lbs. in six months, compared with 5 lbs. on a low-fat diet. Pear shapes lost 10 lbs. on both diets but gained half the weight back. A separate study found that adults with a larger waist-to-hip ratio may be more likely to develop heart disease. How does your bod measure up?
Morality and empathy are writ deep in our genes. Alas, so are savagery and bloodlust. Science is now learning what makes us both noble and terribleand perhaps what can make us better
Here are some of the dilemmas used to study human morality. Take this quiz to see how you compare to other TIME.com readers
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