Executive Editor David Carnoy has been a leading member of CNET's Reviews team since 2000. He covers the gamut of gadgets and is a notable reviewer of mobile accessories and portable audio ...

after which much of its digital content was folded into PCMag.com. I also served, briefly, as the editor in chief of the well-known hard-core tech site Tom's Hardware.

Anyone who has laboured long and hard over a tricky crossword puzzle knows it's true. Now scientists have come up with proof that too much thinking can be exhausting. Older people, in particular ...