<p>The <a href=&quot;http://1gram.posterous.com/night-swing&quot; target=&quot;_blank&quot;>Light Swing</a> is an interactive light installation powered by kinetic energy. Created by Guilherme Pena Costa and Ingrid Gabor, the swing is meant to bring people to playgrounds at night, bringing new energy to public places. All the energy used to light the LEDs is powered directly in response from the swinging action, making the installation both fun and energetically sustainable.</p>
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