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We've improved Slashdot's video section; now you can view our video interviews, product close-ups and site visits with all the usual Slashdot options to comment, share, etc. No more walled garden! It's a work in progress -- we hope you'll check it out (Learn more about the recent updates).

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Power

+ - Creating power from wasted heat

Submitted by
Roland Piquepaille
Roland Piquepaille writes "Today, about 90 percent of the world's electricity is created through an indirect and inefficient conversion of heat. It is estimated that two thirds of the heat used by thermoelectric converters are wasted and released. But now, researchers from the University of California at Berkeley have found a new way to convert this wasted heat into electricity by trapping organic molecules between metal nanoparticles. So far, this method of creating electricity creation is in its very early stage, but if it can scale up to mass production, it may lead to a new and inexpensive source of energy. Read more for many additional references about this research work."
Networking

+ - Videoconferencing server for Linux ?

Submitted by Hymer
Hymer (856453) writes "Well it is really a simple question: Does anyone here know a vidoconferencing server for Linux ? It may be a non-standard solution but the clients have to exist for at least Linux, Windows and Mac OS X. The communication channel should preferably encrypted. I need video and some kind of common workplace or desktop sharing, audio is optional. I've searched the Net and found nothing... geeks do not need to look at other geeks to understand eachother but CEO's obviously does... ;-)"

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