This Earth Week, we’re asking you to turn off your lights while you watch TV or use mobile devices. But you might be wondering whether such a small action can really help the environment.

We can assure you that it can, and we’ve put together a quick video and an infographic to show you how.

So watch and read on—with your lights off!

Share this video: <iframe width=”560″ height=”315″ src=”//www.youtube.com/embed/Yqamsks87_8″ frameborder=”0″ allowfullscreen></iframe>

earth week infographic

Share this infographic: 

<img alt=”lights_off_screens_on_infographic” src=”http://www.greenisuniversal.com/site-content/uploads/2014/04/NBC-Earth-Week_5-1.png”/>

Tell us how many lights you’ll be turning off during Earth Week for a chance to win a 60-inch, energy-efficient, smart TV or a Green is Universal prize pack!