Happy Father's Day, friends. This week, we learned about a revolution in online word-defining, a new type of architecture that mimics nature, the ongoing demise of our nation's rest stops, and America's renewed stature at the United Nations.We also glimpsed the physical manifestation of heaven in Vrindavan, India, considered a new oil-eschewing economic option, and explored an overdue innovation for California's classrooms.We love you, Dad.Photo (cc) by Flickr user freeparking.