Steven Novella on The Scientific Consensus
"I often refer to the “consensus of scientific opinion” and was asked to elaborate on exactly what that is and, more importantly, how it is determined. From a practical point of view, how can the average citizen get a handle on what the scientific consensus is on any given topic? For some burning questions, like whether or not there is significant anthropogenic global warming, much of the debate centers around whether or not there is a consensus and what it means. For others, like should we invest in biofuel from corn, a consensus seems elusive."