An anonymous reader writes "Scientists can't figure out why these rocks — weighing up to several hundred pounds each — slide across a dry lake bed. The leading theory proposes that wind moves the rocks after a rain when the lake bed consists of soft and very slippery mud.
Riches: A gift from Heaven signifying, "This is my beloved son, in whom I
am well pleased."
-- John D. Rockefeller, (slander by Ambrose Bierce)