The Antarctic ice sheet is growing weaker, and NASA’s Landsat 8 satellite continues to capture images showing massive chunks of the Pine Island Glacier breaking off into the sea. This one shows a cracked slab around one mile long heading for the ocean. NASA calls this “tiny” compared to a 2015 event in which a 225-square-mile iceberg calved into the water. Another Antarctic ice crack – over 70 miles long – has also generated a lot of attention recently, and it’s certainly one to watch: If it breaks off, it will be an iceberg the size of Delaware.