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In America, the government banned incandescent light bulbs, convinced that if they banned them, the free market would replace it with something affordable, effective and efficient. In reality, since there was no good alternative, people just horded light bulbs. The automobile did not supplant the horse and buggy because horses were banned and banning regular light bulbs was not going to make compact fluorescent bulbs or light emitting diodes popular. 

While every study ever done shows that people who consume fewer calories than they burn will lose weight, it is as well known that some people cannot or will not eat less or exercise. For those people, laparoscopic adjustable gastric banding – lap banding – is a safe and effective long-term strategy for managing their obesity, according to the findings of 15-year follow-up study of patients treated in Australia. 

The follow-up study found a significant number of lap band patients maintained an average weight loss of 26 kilograms for more than a decade after their procedure.

In 2005, a decade and a half of environmental lobbying convinced President George W. Bush and the U.S. Congress that corn ethanol was a promising fossil fuel substitute which would reduce both American dependence on foreign oil and greenhouse gas emissions. The 2005 energy bill mandated that 4 billion gallons of renewable fuel be added to the gasoline supply in 2006. That rose to 4.7 billion gallons in 2007 and 7.5 billion in 2012, to the delight of corn farmers, activists and almost no one else.

Pregnant women who were vaccinated against pandemic influenza in 2009 were not at increased risk of experiencing fetal death, though pregnant women who contracted influenza had an increased risk of fetal death. 

During the swine influenza pandemic of that year, there were anecdotal reports of miscarriages and stillbirths occurring shortly after vaccination, so the Norwegian Institute of Public Health initiated a study to investigate if there was an association between pandemic influenza vaccination and the fetal deaths. 

While the developed world gets all of the attention for obesity, the developing world is only different in one sense; they retain more severely undernourished people even while obese and overweight people in those countries are gaining weight.

Unless people get obese equally, that growing divide may force governments in the developing world to simultaneously care for starving people while treating health problems associated with obesity, including diabetes and heart disease.

If you are going to use 'entanglement' to teleport quantum information on a practical scale, it needs to be worked out how entanglement could be 'recycled' to increase the efficiency of these connections.

Writing in 
Physical Review Letters , a group has done just that - mathematically. They have
also devised a generalized form of teleportation, which allows for a wide variety of potential applications in quantum physics.