Guest Post: Continuity and Deep Time

About a decade before my father died, he asked me to start collecting rocks for him. I didn’t fully understand why, but since I was studying geology at the time, I began to pick them up wherever I visited. Limestone from the Alps; granite from New Zealand. He kept the rocks I collected on a […]

Science Metaphors (cont.): Mantle Drag

The older I get, the more people I know who have lost what they could not afford to lose.  I’ll repeat:  lost means gone, unrecoverable, not coming back; and what these people lost, they still need and want.  The problem is nearly universal and has no obvious solution, or rather, the solution is idiosyncratic and […]