eldavojohn writes "In an effort to combat air pollution, a Dutch town has paved some of its streets with air-purifying concrete. It contains a titanium dioxide-based additive that utilizes sunlight to turn car exhaust into harmless nitrates. It was shown to do this in a lab and now the scientists are interested in just how much this will affect the air quality around the road. They will sample the air quality by a normal road and by this newly paved one."

Riding with Robots writes "The never-say-die robotic geologist Opportunity continues its extended explorations in Victoria Crater on Mars. The latest findings from the mission suggest that while plenty of water did exist in this location, it was so salty that life would have a very hard time gaining a foothold. 'Not all water is fit to drink,' said Andrew Knoll, a member of the rover science team. 'At first, we focused on acidity, because the environment would have been very acidic. Now, we also appreciate the high salinity of the water when it left behind the minerals Opportunity found. This tightens the noose on the possibility of life.'"

At the Newsweek blog LevelUp, journalist N'Gai Croal wrote this week about the sometimes-precarious position of videogames in popular culture. The frustrations of legislators, lawyers, and 'pro-family' groups aside, the popularity and record sales of the gaming industry would seem to indicate rising stock for gaming as an art form in the US. And yet, there are some folks who see gaming as just another fad, which in some time will be equal in popularity to comic books or tabletop roleplaying. N'Gai starts to form his response by noting that learning to play videogames is considerably easier than developing an appreciation for literature of any kind. He then goes on to note that the (oft-cited) lack of weighty subjects in gaming is more due to the 'pop culture' nature of the hobby than the medium itself. "Popular fiction generally outsells literary fiction. Summer blockbusters generally out-gross arthouse films. Is this any different from, say, Call of Duty 4: Modern Combat out-NPD-ing BioShock last year, or Madden doing the same to Shadow of the Colossus in 2005?" He discusses some ways to address that, but do you have any solutions? Or are games doomed to be the playthings of adolescent boys for the rest of the century? (And yeah, I resent the 'comics ghetto' label too.)

An anonymous reader writes "A company called Modu has come up with an innovative take on a mobile phone. Instead of giving you the finished product, you get a base unit and a choice of 'sleeves', which you can plug the base unit into and turn it into a variety of devices. "If, for example, you're going out clubbing, you can pop it into a fashion sleeve with a fancy design. If you're on a business trip and you need a phone with a Qwerty keypad and large screen, you just have to pop it into a 'jacket' with those features." There's also the option to plug it into a satellite navigation device or even a car stereo. While it seems like an interesting system, I wonder whether modular devices are better than buying standalone products or all-in-one products?"

An anonymous reader writes "Cory Doctorow, founder of Boing Boing, says he doesn't have a problem in principle with the automated network defense systems that guard the Internet against malware, spamigation bots, and other network nasties. However, in his article 'The Future of Internet Immune Systems,' he bemoans the problems caused by 'Internet autoimmune disorder' — where the network defenses designed to block network attacks are automated and instantaneous, but the systems in place to reverse erroneous lockdowns are manual and unresponsive."