On this edition of ST, an interesting chat with Dr. Walter Piper of the School of Earth and Environmental Sciences at Chapman University (in Orange, California). Dr. Piper is an expert on the common loon -- having studied these diver birds, known for their alluring and distinctive calls, for some 22 years -- and he'll present a free-to-the-public lecture on the social behavior of loons this afternoon (Friday the 14th) at 3pm in Oliphant Hall on the TU campus. This lecture is part of TU's ongoing Biological Science Seminar Series; it's entitled "Do Common Loons Use Footholds to Acquire Territories?" You can read more about Dr. Piper and his fascinating research here -- and you can access his well-written blog at this link. Also on today's show, we offer another conversation recorded at the StoryCorps Mobile Booth at Guthrie Green. In this chat, recorded late last month, we hear from Moises Echeverria and Stuart Ashworth -- a pair of young professionals who both live and work in Tulsa, and who have been partners for two years now. In this excerpt, they discuss the recent decision by the U.S. Supreme Court that overturned the same-sex marriage ban in Oklahoma. They also talk about how this landmark decision has led them to wonder what their own eventual wedding will be like.