. >> i'm adrian ballenger. >> i'm cory richards. >> we're three days away from leaving for our summit without supplemental oxygen. >> coming up on "cbs this morning," we're going to show what climbing at that altitude does to your body and how we're capturing it all on snapchat. >> stay tuned. >> thanks, guys. that's what you call a good tease. >> yes. >>> if you're heading out t through the cbs all-access app on your digital device. we know you don't want to miss that story. we guess you want to see vice president joe biden's emotional advice to his younger self. our "note to self" series. we'll be right back. i sleep extremely hot. i wake up and i just feel like sticky. we have the windows open, the ac on, i'd close it in the middle of the night, he'd open it in the middle of the night, it was a nightmare. my new tempur-breeze stays cool to the touch. not cold, but cool. it naturally adapts to your body and somehow creates the perfect temperature for you. sleep cooler. wake more refreshed. discover the new tempur-breeze. and now thru june 5th, save hundreds on an adjustable base whe

meanwhile, adrian ballenger and cory richards, the two climbers we've been following who have been snapchating are safe and on their final leg of the journey. they'll make the final push to summit around 2:00 eastern time. they'll push through the death zone. >> going up optional kaczynski once again stands by his belief that he's not crazy. in a handwritten letter, ted kaczynski, known as the unabomber, writes, "i am ready to speak to someone from the media regarding my brother's recent comments and how they are being used to torment me." he listed his preconditions for granting an interview including "tell me who you are, why i should trust you, and affirm that you understand that i am not mentally ill." >> the fbi says an american airlines 727 with 80 persons aboard landed safely today's dulles airport and a small bomb exploded in a mail pouch in the cargo hold. >> reporter: for nearly two decades, kaczynski sent bombs through the mail, killing three people and injuring two dozen more. he was captured in april, 1996, and sentenced to four life terms. in the letter, kaczynski refers to his b

meanwhile, adrian ballenger and cory richards, the two climbers we've been following who have been snapchatingafe and on their final leg of the journey. they'll make the final push to summit around 2:00 eastern time. they'll push through the death zone. >> going up optional, coming down mandatory. very committed. >> dangerous. >> i know. >> thanks. >>> a man convicted of terrorizing the country with bombs is reaching out to tell his story. ted kaczynski, known as the unabomber, sent a letter to at least one journalist. in it he says he wants to speak about his mental health. his attacks killed three people and injured two dozen others. kaczynski was captured in 1996. anna werner has been covering the case for years. good morning. >> reporter: good morning. the letter addressed to new yorker writer lawrence wright has likely been sent to several other journali brother who helped authorities end the bombing spree. kaczynski once again stands by his belief that he's not crazy. in a handwritten letter, ted kaczynski, known as the unabomber, writes, "i am ready to speak to someone from the media re