Michael Calabrese, the Director of the Wireless Future Project at the Open Technology Institute, delivered this "Spectrum 101" presentation as part of a panel at Spectrum for Democracy: Securing the Gains from the Arab Spring on May 3, 2012. The presentation explains some of the technical basics of spectrum, as well as issues of regulation, scarcity, interference, and license-exempt use.

The project is run by Sascha Meinrath and despite the fact it is getting shedloads of US money, it is based on some of the better ideas of internet community access. It is designed to allow a smartphone to connect with other smartphones, ...

For more than a year, the intelligence services of various authoritarian regimes have shown an intense desire to know more about what goes on in an office building on L Street in Washington DC, six blocks away from the White House.

The office is the HQ of a US government-funded technology project aimed at undermining internet censorship in countries such as Iran and Syria. And so every week – sometimes every day – email inquiries arrive there that purport to be from pro-democracy activists in those places, but which, the recipients are confident, actually come from spies.

This newspaper's parent company sold last week for $55 million, a staggering $460 million less than what it fetched in 2006. The plight of the company, which also owns the Daily News and Philly.com, reflects trends afflicting newspapers across the country, which continue to bleed revenue and jobs as readers and advertisers migrate to the Internet. It seems that advertising-fueled newspapers, nearly the last institutional bastion of journalism, are not sustainable.