FLYING Magazine on MSN3 小时
The Gadget: Let's Stop the 'Beeping' Noise
My first thought was to use a sonar motion detector, although, as an old friend and general-purpose adviser observed, an ...
The Cipher Brief20 小时
The Cipher Brief: National Security news, analysis and expert commentary.
China’s New Barges Could Make a Tough Task Easier: Invading Taiwan ...