Archive: 03/31/2009

FDA cracks down on unapproved narcotic painkillers

(AP) -- The government ordered 14 unapproved narcotic painkillers off the market Tuesday, prescription versions of potent morphine, hydromorphone and oxycodone. The Food and Drug Administration told nine manufacturers to ...

dateMar 31, 2009 in Medications
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Genetic basis for migration

Scientists studying Eastern North American monarch butterflies (Danaus plexippus) have uncovered a suite of genes that may be involved in driving the butterflies to migrate towards Mexico for the winter. Their research, publis ...

dateMar 31, 2009 in Evolution
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