http://en.wikipedia.org/wiki/Stephen_Baxter
http://www.stephen-baxter.com/
_ Terry Pratchett and Stephen Baxter on The Long Earth
https://www.youtube.com/watch?v=Zif_GfGesf0
_ The Long Earth: Terry Pratchett and Stephen Baxter
https://www.youtube.com/watch?v=nNsDXeHUkLw
