By Vidya Rajan, Columnist, The Times This week, a Penn’s oak tree fell over in my neighborhood. It was on the grounds of the London Grove Meetinghouse, and we were all familiar with this venerable tree. It’s falling was a sad passing. Word spread on the grapevine, and we all went to pay our respects. A Penn’s oak is an oak which was presumed to have been alive when William Penn landed in Penn’s...