Kate Rogers is a reporter at CNBC.
News and trends
Opportunity: The growing divide between prospering American workers and those falling further behind.
Venture capitalist Peter Thiel's recent comments about marijuana use at Twitter underscore a more widespread problem.
Some U.S. businesses have already waded into China's largest ecommerce conglomerate, which is about to go public.
No matter how smart you are or how great you startup idea is, one big investor says the elevator-style pitch doesn't work. Here's why.