5 things to know for Sept. 4: Harvard, Health care, Maine mass shooting, Aviation safety, Climate change
By Jade Walker, CNN The world’s largest iceberg is “rapidly breaking up,” scientists say. Although Iceberg A23a previously weighed nearly 1.1 trillion tons and was slightly bigger than the state of Rhode Island, it has shrunk to about the size of Greater London. Here’s what else you need to know to get up to speed
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