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Fracking, the process of injecting numerous chemicals and millions of gallons of water deep underground under high pressure to fracture hard rock and release trapped natural gas and oil, is a very controversial method of energy extraction which has been associated with many negative side effects. In the United States, it has been found to cause earthquakes, water contamination and a myriad number of health issues.
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Researcher Paul Zak thinks so, and he’s proving it by taking blood samples from all sorts of people, from a bride and groom on their wedding day to tribal warriors in Papua New Guinea as they prepare to perform traditional rituals. He’s looking for levels of oxytocin, known as the "love chemical."
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