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phone food app

SNACK SNAP  People who took pictures of their food for three weeks helped scientists track human eating habits. The results show that eating three meals a day is a myth.

Mexican cavefish

VISUAL ECONOMY  An unusual measurement shows how much Mexican cavefish — with no eyes — save on metabolic costs since the cave population lost its vision.

POWER SIP  A new way of looking at hummingbird tongues says they work like tiny pumps, challenging the familiar idea that the birds sip nectar by capillary action. 

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