Last year, Ember Technologies, Inc. ran a crowdfunding campaign on Indiegogo to build a mug that keeps hot drinks at the perfect sipping temperature. By now, it’s sold 4,000 of these devices. And in something of a coup for the startup, Starbucks Corp. has begun selling Ember Temperature Control Mugs in its stores across most … Continue reading Starbucks starts selling Ember mugs, which keep your drink at a steady temp for hours