"Our Choice is a 2009 book written by former U.S. Vice President Al Gore" {url: https://en.wikipedia.org/w/index.php?title=Our_Choice&oldid=1264373325, TODO add rest of partial ref data (TED Nelson calls it something else?}

I'm mainly interested in the iPad app version that Bret Victor worked on...
Feels very much like an interesting and good version of what a book could be in a digital world (but almost never is).