Amazon.com Inc. is spending more than $100 million on a factory in Greenwood, Indiana, to build equipment for its warehouse robots, according to plans the company released today. The Wall Street Journal reported that Greenwood will be the fourth plant Amazon uses to make robots. Until August there were only two, both in Massachusetts. The […] The post Amazon to spend $100M on Indiana plant, its fourth site for building robots appeared first on SiliconANGLE.