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 of the U.S. and online for $149.95. Whether it’s… Read More