Another morning arrived without power, and without phone reception, but Ana still had about 15 percent of phone battery left from the night before. In her nightdress, with the curtains still closed, she got out of bed and began to record.

The young Cuban mother recorded video as she drank her coffee. She had brewed it the night before and kept it in a thermos so she wouldn’t need to fire up her coal- and wood-burning stove first thing in the morning. She recorded — in five-second clips, to conserve battery — as she swept the tile floor of her modest kitchen, in her small town.