Dear Laura,
Every time that I put my Norns underwater for 20 minutes, they... DIE! And every time that I inject them with 45 gallons of Histamine, they... DIE! And when I put them in the Jungle Terrarium with 20,000 Grendels, they... DIE! What am I doing wrong?!
- Norn Killer
Dear Norn Killer,
Well, you're obviously experimenting with the wrong kinds of Norns here. Only amphibious Norns can survive for extended periods of time underwater. Only Toxic Norns can survive large amounts of Histamine. Only uber-violent Norns can survive three rounds with a pack of Grendels. Please take advantage of the myriad of genetic breeds available, you'll find that your game is much more enjoyable. Also, remember, these Norns depend on YOU to help them survive, so don't let them down. I'm sure you'll put up a great fight. 
- Laura