Plants are more connected to the summer solstice than humans. Plant cells contain microscopic amounts of phytochrome, a light-sensitive pigment that actually enables plants to reckon the length of daylight.
When the length of daylight the “photoperiod” falls below a certain critical level, the leaves of a maple tree spontaneously start changing colors. The result is a breathtaking spectacle, especially in New England.
The behavior of animals is strongly tied to the length of daylight.
For instance, when the photoperiod reaches 12.5 hours of sunlight per day which in the U.S. happens in late March the gonads of male and female hamsters instantly begin revving up. When the photoperiod falls below 12.5 hours of daylight in mid-September, the reproductive machinery begins shrinking and slowing down.
Now was that hamster information useful information?
Length of daylight which maxes out on the summer solstice also triggers many other important animal traits and behaviors. Everything from the color of animal fur to the timing of animal migrations.
Scientists have also come to learn the huge importance of daylight to our own mental and emotional well being. A recent, experiment evaluated the emotional content of tweets from 2.4 million people worldwide for nearly two years.
Researchers found that, all other things being equal, as the length of daylight increases, so does a person’s general level of happiness.
Everything else being equal, therefore, the summer solstice is arguably the happiest day on Earth.
The perfect mindset for participating in all those over-the-top solstice celebrations.
Not from the USA. Please leave me comment about your home town and country.
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Why is common sense so uncommon?