Free Republic

But most vaccine skepticism, if by that we mean reluctance, is not based on conspiracy theorizing — it’s based on risk-benefit calculations. You may think it’s an innumerate calculation. But when you look at patterns of uptake in the United States, two factors stand out, factors that are larger in their effect than partisanship: age and density. The older you are and the denser your community, the more likely you are to be vaccinated. The younger you are, and the more rural your community, the less likely you are to have gotten it. This reflects the real facts about the...

A recent MIT analysis shows that the energy balance of corn ethanol is actually so close that several factors can easily change whether ethanol derived from that process ends up a net energy winner or loser. Further analysis shows that making ethanol from cellulosic sources such as switchgrass has far greater potential to reduce fossil energy use and greenhouse gas emissions. A graduate student in MIT’s Department of Engineering, Tiffany A. Groode, performed a life cycle analysis on the production of corn ethanol, as others have done. Groode, however, incorporated the uncertainty associated with the values of many of...