Philadelphia's most recognizable hip-hop group kicked off summer on Saturday with their annual Roots Picnic concert, but even when in a celebratory mood, the impact of the oil spill in the Gulf of Mexico weighed heavily on the mind of the group's formidable drummer and bandleader, Ahmir "Questlove" Thompson. "They need to find another way…another … Continue reading Questlove: Always a risk with offshore drilling