The integration between electronic devices and networking enable convenient, comfortable, efficient and secure life. So there are a variety of smart home hubs and accessories migrating to daily life with all kinds of possibilities and extending the scope and coverage of Internet of Things (IoT)....

In 1939, the De Beers diamond company faced a dire situation. The company’s accumulation had been dwindling for decades. The Great Depression not only pushed diamond sales to historic lows, it shifted American attitudes around consumption and thriftiness to the detriment of the luxury object....