Today in Nature: The Fall Equinox

September 22nd: Happy fall equinox, all. The term 'equinox' is Latin for 'equal night', since the ancients noticed that days and nights are roughly equal at this time of year. Here in Ontario, we are losing 2-3 minutes of sunlight each day, as we slide towards the shortest day of the year in December. That loss of sunlight is triggering all sorts of natural changes, including leaves losing their green pigment, revealing their reds, yellows and oranges.