* Gapers Block has a mom’s account of the new Chicago Public School organic lunches, the subject of this week’s cover story.

* Chicagoist has a nice roundup of Lake Michigan SCUBA diving advice.

* The Sun-Times has a (disappointingly short) guide to Hyde Park courtesy of the Obamas, although it’s tough to recommend much in the way of food and shopping in the neighborhood. Having seen the senator in Calypso, I can confirm they’re telling the truth about that, and I second their choice. Calypso rules. Go there instead of the overrated Dixie Kitchen. Pizza Capri is fine if you’re there, but not worth the trip. 57th Street Books has the best mid-list selection I’ve ever seen at an indie bookstore, but the hard-core will find the cavernous Seminary Co-op more their style. The author of the piece recommends Mellow Yellow; please disregard his advice. For cheap eats you’re better off at the Indian/soul food joint Rajun Cajun.

* Cicada mash-up!

* Chicago Public Radio’s new radio station is now online, five days a week, about three hours a day (but not Memorial Day), although the posted schedule doesn’t actually seem to be representative of actual on-air hours. I’ll have more on this after a few days of listening, since it only streams live; they don’t have any podcasts or archived shows. The user-submitted audio so far consists of 30 seconds of rain and a cover of Zappa’s Peaches in Regalia by Sexual Pantalones.