Constance Gustke is a New York-based journalist who covers investing, digital currencies and emerging mega trends. She currently contributes to The New York Times "Retiring" section and has also written for BBC.com/Capital, Forbes, MSNBC.com, The Atlantic and many other publications. She is a former staff reporter at Fortune magazine.
Bitcoin's fall has disappointed backers, but it's also led creative thinkers to invent digital currency backed by gold, pot and even manure.
Hacking is very bad news for big corporations but can be very good for investors on top of the latest in cybersecurity stocks.
The energy sector is worth a look even for investors wary of a short-term rebound trade—and ETFs may be the way to tiptoe back in.