newVideoPlayer( {"type":"video","player":"http://www.youtube.com/v/F5Ri_HhziI0&hl=en&fs=1&hd=1","customParams":[] ,"width":500,"height":332.5,"ratio":0.615,"flashData":"","embedName":null,"objectId":null,"noEmbed":false,"source":"youtube","wrap":true,"agegate":false} ); As your frustrations with waiting in line mount this holiday season, it may be some comfort to know the scientific trappings of why, exactly, you’re stuck for 20 minutes behind the lady who insists on a dozen price checks. More »
In case registering on the national Do Not Call list didn’t really do anything, two ex-telemarketers in the U.K. have invented a blocking device that acts like a receptionist for your landline. The TrueCall intercepts all your calls before they reach you, letting them through if the number is recognised as a family member or friend, and replying with an automated message if the number belongs to a telemarketer.
If you want to build a skyscraper 2,275 feet (693 metres) tall, you will face engineering challenges comparable to those of the Space Shuttle just because its sheer size. One of them is communications. When the unbelievable Burj Dubai started to get really high, the construction workers discovered one problem that seems obvious now: their walkie-talkies stopped working as they climbed the structure.
