Why do leaves change color and fall off trees in autumn? »
Posted By engineer 1 year, 9 months ago in Science & TechnologyThat is a question to be asked every year at about this time. Leaves start falling in autumn (or the fall) when the days start to get shorter.
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engineer
Hi My background is Biomedical engineering with an MBA As you know from all my comments where I almost stand politically. I have loads of ...
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jordan111 year, 9 months ago
I too prefer 'fall and spring.' Our fall came early, with some turnings starting in August! (Seattle).
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tiredofwhiners1 year, 9 months ago
Mt. Charleston was snow capped last week. It still is today. That's an early fall in Las Vegas' higher elevations. Lower in the desert, the sagebrush and mesquite just stay brown all the time.
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texangelwings1 year, 9 months ago
Thanks engineer, great article! Science is so facinating.
The non-scientific reasons are to allow all lifeforms to prepare for winter and for people, it is a wonder trip to view the foliage. The view that is marvelious to the senses.
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mdvaldosta1 year, 9 months ago
Propeller - not only entertaining but also informative. Heh. That was interesting engineer.
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BronxBomber1 year, 9 months ago
I love Spring m'self,the days are longer, just when the flowers are blooming, the bees are a buzzing, and the birds are a singin' good article btw. and thanks!
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tiredofwhiners1 year, 9 months ago
I lucked out in 1971 on a trip out east and it was one of the best fall colors they had in years (Vermont and New Hampshire). I picked up leaves and pressed them in books between kleenex. I now have some antique pressed colored leaves.
On another note, I recall that conifers have an "antifreeze" that prevent freezing and thus breaking of their cells. Deciduous trees don't have that and their leaves would have a problem in very cold weather.
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aceofspades11 year, 9 months ago
Wow if even Tiredofwhiners believes this science - it must be true!
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toph19731 year, 9 months ago
I'm wondering what happens in Hawaii? Do the trees go dormant? I'm thinking that the temps never really get cold enough. Days really wouldn't get short enough because they are so far south. Anyone know?
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