- For a brief period tonight, some parts of the world will go dark. It's Earth Hour CNN
 - Global landmarks turn off the lights to mark annual Earth Hour The Guardian
 - World celebrates “Earth Hour” by turning off non-essential lights CBS Evening News
 - What is Earth Hour? Some parts of the world will power down as part of global movement on March 27 WLS-TV
 - Cities worldwide dim lights to mark Earth Hour Yahoo News
 - View Full Coverage on Google News
 
from Top stories - Google News https://ift.tt/2QECsVj
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