This is an all-too-frequent occurrence on Capitol Hill, whose streets are lined with a large number of very old trees. I don’t know how this particular incident happened, but a few weeks ago when walking home I encountered a homeowner with an enormous branch in his yard. He said it had suddenly ripped off the tree in the treebox (on the sidewalk) in the absence of any wind or stormy weather.

Driving around New South Wales, posted earlier: