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GPS buyer's guide

Prices for GPS devices and apps have come down in the last year and many of us are looking at jumping on the bandwagon. We take a look at how it works, why you should (or shouldn't) buy a GPS, as well as key features to look out for.

Format wars: the tech that should have won

Did you love Laserdisc? Were you bonkers over Betamax? Do you cry yourself to sleep because BeOS never hit the big time? Fret no more -- superdork Captain Tech is here to travel back in time and save the format losers that should have triumphed.

The Explain Series