The Andes Mountains along the Chile-Bolivia border. The visible and infrared data have been computer enhanced to showcase the color variations in the different materials (Photo Credit: NASA GSFC, MITI,ERSDAC, JAROS, and U.S./Japan ASTER Science Team)

On Friday, April 22, billions of people across the globe will celebrate Earth Day. They will commemorate the event by staging rallies, participating in environmental clean-up activities, and pledging to undertake "green" initiatives to protect this precious planet. While that is certainly helpful, it would be even better if we could incorporate "greener" habits into our daily lives. These stunning images taken from space by NASA will serve as a reminder of why making every day "Earth Day" is so important.