This August marks the 40th anniversary of Woodstock, the groundbreaking event that defined both rock festivals and a generation and helped establish the careers of a host of musicians and bands. KMUW 89.1 FM celebrates with a two-part special "Back to the Garden: Woodstock Remembered" in the Global Village timeslot at 9 p.m. Thursday and Friday, Aug. 13-14. http://www.kmuw.org