Body & Brain

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junk food

GUT BUDDIES  Diets rich in fast food can mess with people's gut bacteria. These microbes may play a bigger role in health problems such as obesity and diabetes than scientists once suspected.

triboelectric nanogenerator w/voltage graph

POWER SQUEEZE  With a squeeze, swing or jiggle, body motion can flex a triboelectric nanogenerator (left) to create voltage (right), which can charge implantable and wearable medical devices. Textured surfaces within the generator can boost the power output.


It’s so hard to turn down just one more muffin, or cupcake, or cookie. Rodent studies reveal why: The mechanisms that control the hunger for and the pleasure from food are inextricably intertwined. 

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