the document says, for example, that one interrogator threatened khalid sheik muhammad that if any other happened in the united states, "we're going to kill your children." >> philipa and adam lynn in washington. it's been revealed pop star michael jackson's death was caused by lethal levels of the power anesthetic propofol. the los angeles coroner's findings have been made public in court documents. the singer died two months ago at the age of 50. he had suffered cardiac arrest at his home in l.a. his doctor, dr. conrad murray has been interviewed twice by police but has not been named as an official suspect. speculation about this drug has been around since michael jackson's death but this is new, isn't it? >> it's a concern what was reported at the time, yes, and has been reported heavily ever since and it's almost become fact but this is the first real confirmation we have of it in court documents made public in houston -- details of what the coroner found, details of conversations that michael jackson's personal doctor, dr. conrad murray had with investigators investigating the sing

interrogators threatened to kill e children of khalid sheik muhammad, mastermind of the 9/11 attacks. show michaelackson wasilled bya lethal dose of the anesthetic propol. ahead of the landmark copenhagen summit oclimate change at the end of the year, our corresndents arexploring how different parts of the gbe are being affected. chinese participion is key to making a international framework work, but it's difficult balance, curbing emissionbut also allowing more and more chinese peopl the modern appliances many now regards essentials. quentin somervilletraveled to inne mongolia to see how its landscape is changing. >> by inner mongoan sunlight, 10-year-olanna is taking cre of her homework. there is no electricityhere. she has one of th tiniest carbon fotprints. she lis slap in the middle of the region's biggest wind farm. here, on the grasslands, there is no ignoring china growing petite for energy. when she gows up, she tellsme, she wants a television a frid, a car and an apartment. e world's energy landscape is being transformed cause of china. lana is par of new neration of hury c

the interesting thing about these is it shows that khalid sheik muhammad and abu zubaydah were pivotal in the war against al qae, that both were uncooperative at first, that the application of enhanced interrogation techniques, specifically waterboarding, especially in the case of khalid shaikh mohammed, convinced him he needed to cooperate. the iets were critical and saved thousands of life and let us defeat all further attacks against the united states. the thing i keep coming back to time and time again, chris, is the fact that we've gone for eight years without another attack. now, how do you explain that? the critics don't have any solution for that. they can criticize our policies, our way of doing business, but the results speak for themselves, and as well as the efforts that we went to, the justice department, to make sure what we were doing was legal, was consistent with our international treaty obligations. >> at one point the vice president showed us the view of majestic mountains from his backyard. i asked about the democrats' running battle with the cia, including nancy pe

interrogators threatened to kill the children of khalid sheik muhammed, the 2004 cia report still partially redacted, quote, the interrogators said to khalid sheik muhammad, if anything happens, we're going to kill your children. it reveals a technique not previously disclosed that the interrogator reportedly used a pressure point point technique with both his hands on the detainee's neck blank manipulated his fingers on the carotid artery until he passed out. and the interrogation techniques on the man suspected of plotting the bombing. the debriefer entered the cell where all nashiri cell and racked it twice. later, the briefer sbd the detain detainee's cell and revved the drill while he stood naked and hooded. the debriefer did not touch him with the power drill. the report comes off a lawsuit by the civil liberties union called it outrageous. >> if threatening it isn't torture, i'm not sure what is. >> water boarding got khalid shaikh mohammed muhammad to talk saying he provided only a few intelligence reports prior to the use of the water board. the government released other declassified documents. cheney said they would show the interrogation proce