Sámi herders use satellite - based maps of snow to find best areas . Climate change has made it harder to find good spots for reindeer herds . It could also be used to monitor land - use change over time .
Sámi herders using satellite-based maps of snow to judge best areas . Climate change has made it harder to find foraging spots for reindeer herds . Technology could also be used to monitor land-use change over time .