Our radio active summer continues on THE MEDICINE BALL CARAVAN (11am-noon Central Standard on KRVS Public Media 88.7FM locally or anywhere via www.krvs.org) with the latest by The Arcs, The London Souls, TLKR, Cones of Uncertainty, Jonathan Tyler and Swampcandy. Also: some Blue Cheer, Yo La Tengo, Blues Magoos, Canned Heat and more.