How much is a half of a mile per hour drop in velocity worth? I wondered that question this season as I watched Spencer Strider go from the most dominant pitcher in baseball with bases empty to ...

image: Kīlauea lava lake, 2014. The lake surface is spattering in the bright area on the right. This spattering is associated with a source of seismic energy - or 'volcanic tremor' - which is used as ...