The Global Learning and Observations to Benefit the Environment (GLOBE) Program invites you to take part in the Land Cover Challenge: “Land Cover in a Changing Climate.” Take photos of the landscape around you using the GLOBE Observer app's Land Cover tool. (Remember to always be safe and follow local guidelines when observing.) Comment in the field notes about any changes you know have occurred in the area you photographed, or changes you know are planned. While you are welcome to continue to the next part of the app to classify the land cover you have photographed, the photos themselves and the field notes are the most important aspects of this challenge. If you contribute 25 observations between 26 July and 26 August, the team will send you a digital Landsat image of one of your observations. If you contribute 50 or more observations during the challenge, the team will mail you Landsat commemorative material.