The darkest day of 2021 will soon pass. On December 21st, the sun will stop on its southward journey, momentarily hover over the Tropic of Capricorn, and begin its march northward. Daylight hours will gradually increase, and, after a fashion, the temperatures will warm. The grass will grow and trees will put forth their greenery. All will be well. Well is an illusion.

December 21st also marks the shortening of days in the southern hemisphere.…