China bike-sharing pioneer Ofo hits the skids

Bicycle cemeteries, blocked pavements and angry users: the bike-sharing craze is beginning to look like an economic disaster in China, where fierce competition appears set to drive a pioneer of the sector into the ditch.

How to hide secret messages using fizzy drinks

Next time you see someone spilling a drink in a bar, you could actually be witnessing a spy secretly decoding an encrypted message. This might sound like something from a Bond movie. But a team from Israel has used some rather ...

Dangerous citrus pest found in California

(AP) -- A pest that can carry a fatal citrus disease has been found in Los Angeles County, stoking fears that California's $1.6 billion citrus industry could be hit by a potentially devastating threat.

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