I was on Minnesota Public Radio's morning show The Daily Circuit today—along with Ivan Semeniuk, chief of correspondents for the journal Nature—talking about the Curiosity rover, human evolution, and dealing with the big unknowns in science. You can listen to that segment online.
But right at the end of my bit, as I was packing up my stuff to leave the studio, I heard the next segment on the show, and it was AWESOME. Ask a Neuroscientist is, precisely, reader questions answered by a neuroscientist. But you have to read the transcript for today's first question, where a 5-year-old exchanged ideas with Baylor College of Medicine neuroscientist David Eagleman.
Madeline, 5 years old: How does a brain think?
David Eagleman: We don't know. Part of modern neuroscience's quest is to answer that. One theory goes that, in the same way brains control muscle movement, your brain controls your arms and legs and mouth and so on. Thought might be, essentially, covert muscle movement. In other words, it's going through the same routine that says 'bend this, flex that, extend that' - except that it's not controling a muscle. Instead, it's controling something conceptual.