Are prisons making criminals even worse?

Prison Nation SUNDAY at 8P et/pt Inside America's prisons, inmates are packed together like sardines and drugs, gangs and riots plague the system. Are prisons making criminals even worse? Released back on the streets they've got all the gang and drug contacts they need. They're stronger, meaner and more connected. Is this what we had in mind? WATCH A PREVIEW >> GET SURPRISING PRISON FACTS >> Critical Situation: "Nightmare on Mt. Hood" MONDAY at 10P et/pt On Oregon's majestic mountain, one misstep causes nine climbers fall into a gaping crevasse, killing three instantly. Watch as the survivors, some badly injured, fight to escape. WATCH A PREVIEW >> Explorer: "Ultimate Viper" WEDNESDAY at 8P et/pt Their venom is lethal and they can strike with precision in complete darkness. Now, some vipers may be evolving into deadlier forms. Did humans help? WATCH A PREVIEW >> Taboo: "Mating" WEDNESDAY at 10P et/pt How far would you go in the name of love? Drink your partner's blood? Marry someone behind bars? NGC explores extremes of human passion and devotion. WATCH A PREVIEW >> Dog Whisperer Marathon Presented by PETCO Starting FRIDAY at 2P et/pt You tackle the leftovers. Cesar will take care of the dogs. PLAY DIAGNOSE THAT DOG >> "Hog Genius" SATURDAY at 9P et/pt With cement-breaking snouts, shape-shifting skulls and video-gaming skills, these big pigs have bodies to back up their brains and smarts on par with dogs. WATCH A PREVIEW >> Explore More Watch video clips of your favorite shows. Go >> Visit the National Geographic Channel home page. Go >> Subscribe to National Geographic magazine. Go >> Privacy policy. See Details. Go >> © 2007 The National Geographic Channel. All rights reserved.unsubscribeprivacy policy You received this editorial/commercial e-newsletter from National Geographic because the information for your account indicates that National Geographic may contact you via e-mail. To unsubscribe from this e-newsletter, please click on the unsubscribe link above or send your request to... National Geographic Attn: E-newsletter Program 1145 17th Street NW, Washington, DC 20036