Dan Charles
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No one can guarantee that the rice crisis of 2008 won't happen again. A lot of damage remains from the disaster that sent rice prices soaring even while there was plenty of rice. And there's still some of the fear that produced the crisis in the first place.
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Some researchers have found that vegetables like broccoli have fewer good-for-you nutrients like calcium and zinc than they used to. But a new study says that genetics — what plant breeders control — probably isn't the major factor determining nutrient levels.