Yik Yak, the controversial anonymous-messaging app that has spread rapidly across college campuses, is proof that it can take as little as a year these days to go from zero to a valuation of hundreds of millions of dollars.

An Israeli company says it has developed technology that can charge a mobile phone in a few seconds and an electric car in minutes, advances that could transform two of the world's most dynamic consumer industries.

iPhone day, that time of the year when Apple fans must wait in line to get their hands on the newest product, is turning into iPhone season. The iPhone 6 and 6 Plus came out on Sept. 19 in the U.S. and seven other countries, and there are still lines at Apple Stores filled with people who want to buy them.

Practice Fusion, a fast-growing provider of free electronic health records, threw a brilliant pitch at me. Would I like to pose a question to their doctors?