At President Abraham Lincoln's funeral in 1865, the oak tree stood just a few feet from the event, shading the funeral choir.
“The Social Network,” about Facebook founder Mark Zuckerberg, is up for a handful of Oscars this weekend. The movie’s Nine Inch Nails soundtrack also got an Oscar nod for the soundtrack, in part thanks to an unusual handmade synthesizer called the Swarmatron.
The instrument produces eight tones tuned approximately to one note, each tone slightly different.
We speak with the two cousins who invented the Swarmatron, Leon and Brian Dewan.
Peter O’Dowd follows the route of Abraham Lincoln's funeral train 150 years ago, to look at modern-day race relations and Lincoln's legacy.