What If There Were No Seasons on Earth


For many of us, the seasons tell us a lot—like
what holiday is coming up or what delicious seasonal food there might be at the local
grocery store. But what if there were no seasons, or only
one season all year round? Well guess what? 1. The Earth wouldn’t be tilted. Let’s look at this on a global scale. Our planet is divided into hemispheres, and
each one gets a turn at being tilted toward the sun as the Earth spins on its axis. Without the tilt, there’d be some significant
weather changes; science says that cold weather would stretch outward and upward from the
Equator, creating two extremes of hot and cold. Everyone would probably move toward the locations
near the Equator where it’d be warmest. This would cause over-population, the spread
of diseases, and lack of resources. Let’s delve deeper! 2. There’d be a lack of food. As I mentioned, most regions would be cold
and wintery. It would be very difficult to grow wheat,
vegetables, or fruit. Animals, too, would move to those warm regions
by the equator and would likely get over-hunted. If enough food isn’t grown to sustain the
increased population—more on that later—everyone would become scavengers, squeezing out every
last resource they could from the land. 3. Humans probably wouldn’t have progressed. Let’s change perspective a little bit and
think about what it would’ve been like to have no seasons for primitive man. We all know how hard it can be to travel during
wintertime, even in modern times. Humans probably wouldn’t have met up with
other humans much, and settlements would be scattered. If humans couldn’t put their brains together,
there are a lot of inventions that we wouldn’t have today; we may never have learned to use
tools. We may never have become industrialized or
have basic technology! 4. We’d be way more susceptible to germs. Per my previous point, we probably wouldn’t
have advanced much in medicine, either. If everyone had to live all together near
the Equator, we’d be vulnerable to a lot of disease; and not just from each other,
but from insects too. Regions near the Equator are usually warm
and humid, the perfect breeding ground for pathogens that tropical bugs carry. The animals and livestock we’d be using
for a food source would suffer too! 5. Agricultural Problems
Let’s look at this a little closer. There’s a lot of rain in those tropical
climates, which means there’s a lot of shifting soil in the areas that farmers clear for growing
crops. Rain can erode the soil, which pushes all
the nutrients down below the root level, making that farmland at least partially infertile. Tropical regions can deal with this now, because
they generally have a low population density. If everyone tried to move in, there wouldn’t
be enough to go around. Who knows what people would resort to….. 6. We Need Winter! Yeah, winter can be unpleasant, even dangerous. But if there were no seasons and everyone
decided to escape the winter weather that would develop by moving in on the warmth of
the Equator, we’d be missing out on a lot of help. Winter protects us from those tropical insects
and their diseases that I mentioned; also, many crops that we rely on, like wheat, oats
and barley, potatoes, and corn grow better in cooler climates that have a winter season. 7. We would have to re-learn basic survival. Remember when I talked about the Earth’s
tilt? Without that tilt, in addition to not having
seasons, the same areas of the Earth would get the same amount of sunlight almost all
the time. This means we’d have to do some adapting
and learn how to successfully farm in these new conditions; that includes growing crops
and raising livestock. Figuring out how to keep disease at bay would
be on the agenda too. We’d be back at Survival Square 1. 8. The weather and temperature would be predictable. This would be our one advantage. There wouldn’t be much variation in daytime
and nighttime hours, amount of sunlight per day, or change in the atmosphere. Every day would look and feel pretty much
the same! Once we figure out how to farm in one unchanging
climate, being able to predict the weather and its patterns would help a lot. 9. Unchanging Landscape
When our seasons change, so does everything around us; the best example is the leaves
changing during Autumn. If we didn’t have seasons, there wouldn’t
be many variations in our landscape anymore, because the climate would stay about the same,
and each place would have a predictable, set amount of sunlight. Sounds pretty boring to me! What do you think—would you miss the changes
that the seasons bring? 10. The Equinoxes would be off. The equinoxes signal a change in seasons. For us Earthlings, equinoxes essentially mean
a change in light, as days get longer and shorter during the change of seasons. Example: in the Northern hemisphere, nights
start to get longer and daylight hours start to get shorter at – the Autumnal Equinox. Without seasons, there wouldn’t be much
variation in light; changes in light would normally have a huge biological effect on
plants and animals, such as telling them when it’s time to reproduce or hibernate. 11. Psychological Effects
Given that you don’t live near the Equator, you probably experience at least some variation
in seasons where you live, whether it be winter and summer, or wet and dry. Ever heard of Seasonal Depression? Science has proven that sunlight has a positive
effect on our mood, and gives us natural Vitamin D. During the wintertime in the Northern hemisphere,
for example, there’s not as much sunlight, so many people start feeling blue. If there were no seasons, you’d better hope
that you live in a tropical region or can make the move to one! 12. There’d be huge effects on the ecosystem. We’d just have to face it: there may be
some plants and animals that wouldn’t survive if there were no seasons; such as those that
were stuck in a wintery region or a tropical region. That would mean a serious upset in the food
chain, which could lead to more extinction. Humans would still be at the top of the food
chain, but what we could utilize as a food source would likely become increasingly limited. 13. There’d be disruptions in sleep patterns. Humans, and many other mammals, have internal
biological clocks that tell us when it’s time to sleep, and when it’s time to be
awake. If a place experiences a change in the amount
of sunlight it gets, those that live there may see malfunctions in their biological clocks. There’s one simple rule: we know we’re
supposed to sleep when it’s dark, and be awake when it’s daylight. If the Earth was no longer on a tilt, some
regions may see increased daylight hours (or nighttime hours), messing with our ability
to sleep. 14. We could see changes in brain function. A small European study found that our attention
and focusing skills are better during the summertime, and much worse during winter. Short-term memory was even found to be affected;
participants’ short-term memory was best during the fall and worse during the spring. Without seasons, we may not experience these
changes at all, which could lead to slowed brain growth and development. It would certainly be a recipe for an unhealthy
brain. 15. Changes in skin and hair
If you’d happen to be stuck in one of the wintery regions, your skin and hair would
likely dry out. Cold, wintery air is always on the dry side,
and its effects will not only dry out your skin and hair, but will cause itchiness too,
especially in the elderly and young children. Cold air can even cause sensitive teeth! On the flipside, if you’re in that tropical
region, the risk of getting badly sunburned is pretty real. The change in seasons usually evens the playing
field, but without seasons you’d be in one extreme or the other. 16. It could be bad for your heart. If you’re stuck in one of the wintery regions,
being cold all the time will cause your muscles and blood vessels to constrict in an effort
to retain some body heat. Thinner blood vessels make your heart work
harder than it normally would to pump blood through your body. This will cause an increase in your heart
rate. Over time, this could result in heart problems. Plus, you’d get easily winded and physically
exhausted. Bottom Line: It think it’s fine that we
keep the seasonings just the way they are. I mean I just don’t know what I’d do without
salt and pepper… what? Oh, seasons instead of seasonings. Got it. Well that’s embarrassing… Hey, if you learned something new today, give
this video a like and share it with a friend! Here are some more videos I think you’ll
enjoy; just click to the left or right and stay on the Bright Side of life!

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