The Corporation Wars trilogy by Ken MacLeod — well-written but not really my thing. I slogged my way to the end of the first book, made a start on the second, then decided life's too short.
Various things with a polar theme: White Fang by Jack London, A Negro Explorer at the North Pole by Matthew Henson, and South! by Ernest Shackleton. I also re-read “Scott and Scurvy” at Idle Words (there’s a bunch more stuff there about Antarctica too).