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                   Caffeine Shapes the Brain to Make Us Buzz

   by Maia Pujara

   There's no denying the jolt that caffeine gives us, and why some people
   say they aren't human until they've had a sip of their favorite drink.
   New research tells us what caffeine is doing to our brains to give us
   that boost of energy. Maia Pujara reports.
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   [1]http://www.voanews.com/media/video/2918200.html

References

   1. http://www.voanews.com/media/video/2918200.html