| 4219 :44x01 - How to Kill a Human Being (Jan/15/2008) | | Michael Portillo allows for his body to be pushed close to death to investigate the science of execution. Whilst the American Supreme Court decides if the lethal injection is causing prisoners to die in too much pain Michael sets out to find a solution which is more humane. | |
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| 4220 :44x02 - Total Isolation (Jan/22/2008) | | Six volunteers are isolated in a nuclear bunker and subjected to a world without sensory stimulation. Their brain patterns change over the 2 day experiment. | |
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| 4221 :44x03 - What On Earth Is Wrong With Gravity? (Jan/29/2008) | | Dr. Brian Cox is a firm believer that that the answer to the meaning of the universe lies in gravity. Brian fires lasers at the moon whilst traveling across the United States. He also visits a top security military base where he learns some interesting facts. | |
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