Tonga volcano: Scientists search for cause of massive eruption

More international aid has arrived in Tonga after an undersea volcanic eruption hit the pacific island. The people of Tonga are now in recovery mode, trying to clean up some of the catastrophic damage left behind. There is also other work underway to understand why the massive eruption happened. As Mike Armstrong reports, scientists have been watching this volcano for years and some are hoping their data will lead to answers.