Twenty years ago, on this day—26 November 2005—I posted the first essay on this blog. Today's post is the 647th essay (and the first one...

At first glance, my title this week might seem like an odd question or the opening to a joke. In fact, the question is asked and answered in...

alkaline hydrothermal vent In an essay in my series on Vitalism ( Crossing the Line Between Death and Life , 30 May 2014), I mentioned...