April 22 is the day when more than 180 nations celebrate Earth Day. Earth Day is the world's most widely observed secular holiday. It is supported by the international Earth Day Network and characterized by activities focused on environmental issues.


Earth Day ...

  • Loading...
locked icon

Sign in to access this content

Get a 30 day FREE TRIAL

  • Watch videos from a variety of sources bringing classroom topics to life
  • Read modern, diverse business cases
  • Explore hundreds of books and reference titles