Reading, going to work and navigating a busy life may be enough to maintain brain health, but lifting performance takes massive amounts of practice--learning a new language, taking regular music lessons, doing complex jigsaw puzzles--to produce enough chemicals to make synapses stronger.

FORBES: Innovation

"The benefit of a natural-language approach is that you get performance superior to regular keyword searches, " says Jackie Fenn, a vice president at Stamford, Conn.

CNN: New search engine promises real answers

As a first step, NATO could consider regular training on cyberdefense so that national experts share the same knowledge and language.

WSJ: Anders Fogh Rasmussen: NATO's Next War��in Cyberspace