NASA Explains Space Station’s Checkerboard Photo

COOLIN, Idaho (CBS4) – More than a century ago, the U.S. government granted land to the Northern Pacific Railroad.
Today, those parcels have created a curious checkerboard formation photographed by International Space Station Expedition 50 astronauts.
So how did it happen?
NASA says that the railroad ultimately sold off the land, which oftentimes was used for logging.
“The white squares in the checkerboard show where snow has fallen on deforested ground – where trees have been