iamapizza writes "New Scientist reports on the quest of two math boffins for the perfect way to slice a pizza. It's an interesting and in-depth article; 'The problem that bothered them was this. Suppose the harried waiter cuts the pizza off-center, but with all the edge-to-edge cuts crossing at a single point, and with the same angle between adjacent cuts. The off-center cuts mean the slices will not all be the same size, so if two people take turns to take neighboring slices, will they get equal shares by the time they have gone right round the pizza — and if not, who will get more?' This is useful, of course, if you're familiar with the concept of 'sharing' a pizza."

WSJdpatton writes "Walt Mossberg tested the iPhone for two weeks, in multiple usage scenarios, in cities across the US. His verdict is that, despite some flaws and feature omissions, the iPhone is on balance a beautiful and breakthrough hand-held computer. Its software especially sets a new bar for the smart-phone industry, and its clever finger-touch interface, which dispenses with a stylus and most buttons, works well, though the lack of physical buttons can be a hindrance." Digital Daily has a roundup of early iPhone reviews.

Several readers let us know that the University of Washington has announced that it will pass on RIAA settlement offer letters to students identified, presumably by IP address, as suspected file sharers. "The notices say offending students have 20 days to settle with the association by paying it about $3,000 to $5,000 or be taken to court without possibility of a settlement." The Vice Provost for Student Life sent an email to all students saying, "The University has been notified by the RIAA that we will be receiving a number of these early settlement letters. After careful consideration, we have decided to forward the letters to the alleged copyright violators."

BigBadBus writes in with a claim by an Italian team that they may have found an impact crater resulting from the 1908 Tunguska explosion over Siberia. The BBC story quotes a number of impact experts who doubt the Italians' claim. "A University of Bologna team says a lake near the epicenter of the blast may be occupying a crater hollowed out by a chunk of rock that hit the ground. Lake Cheko — though shallow — fits the proportions of a small, bowl-shaped impact crater, say the Italy-based scientists. Their investigation of the lake bottom's geology reveals a funnel-like shape not seen in neighboring lakes. In addition, a geophysics survey of the lake bed has turned up an unusual feature about 10m down which could either be compacted lake sediments or a buried fragment of space rock."

A number of readers sent in stories about Net radio going dark for a day. Not all of it, but according to the Globe and Mail at least 45 stations representing thousands of channels. The stations are protesting a ruling establishing royalty rates that will put most of them out of business on July 15. "The ruling... is expected to cost large webcasters such as Yahoo and Real Networks millions of dollars, drive smaller websites like Pandora.com and Live365.com out of business and leave a large chunk of the 72 million Net radio listeners in the dark." SaveNetRadio has a page where US residents can locate their senators and representatives to call them today.

ElvaWSJ writes "Wi-Fi was supposed to reduce complications, not create new ones. But in many offices Wi-Fi has been a headache. Like all radio signals, Wi-Fi is subject to interference. Its low power — less than even a typical cellphone — means that walls and cabinets can significantly reduce signal strength. Wi-Fi also creates networks that are more open than wired ones, raising security issues. And Wi-Fi has caused problems for virtual private networks. Some VPNs require a lot of processing power. If a wireless access point — at home, at the office, or on the road — isn't robust enough, a user often gets bumped off the connection."