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geography

There's a big change at the 98th meridian.

Have you ever wondered why the eastern half of the United States is densely populated while everything west of Omaha, save for a few metro areas, is no man’s land?

Most people would assume that it’s because people first settled in the east and moved west. Or, they may believe it’s because of the vast desert that takes up most of the southwest. Those are some decent reasons, but it’s a much more complicated issue than you'd imagine.

A 20-minute video by RealLifeLore explains how topography and rainfall have created what appears to be a straight line down the middle of the country on the 98th meridian that dictates population density. Eighty percent of Americans live on the east side of the line and just twenty percent to the west.

RealLifeLore is a YouTube channel that focuses on geography and topography created by Joseph Pisenti.

In the video, we see that several large cities border the American frontier—San Antonio, Austin, Fort Worth, Oklahoma City, Wichita, Omaha, Lincoln, Sioux Falls, and Fargo, as well as Winnipeg up in Canada. To the west of those cities? Not much until you reach western California and the Pacific Northwest.

Why? Watch:

The major reason why the population drastically changes is rainfall. It rains much more on the east side of the line versus the west. The reason for the drastic change in rainfall is that the Rocky Mountains create a colossal wall known as a rain shadow that prevents moisture from passing from the Pacific Ocean. This has created a large swath of dry land that’s not conducive to larger populations.

Though the eastern U.S. is more densely populated, it doesn't mean the west doesn't sometimes feel crowded, especially if you live in Los Angeles County. What side of the line are you on?

This article originally appeared three years ago.

The Wallace line divides the entire Malay Archipelago.

A fascinating biological phenomenon occurs between two islands in Indonesia. An invisible line divides the entire Malay Archipelago, and on the western side, the animal life is characteristic of Asia, featuring rhinos, elephants, tigers and woodpeckers.

Contrasting this, the eastern side of the islands presents a completely different ecological cast, boasting marsupials, Komodo dragons, cockatoos and honeyeaters, often associated with Australia.

The stark differences in biodiversity on the islands captured the keen eye of British naturalist Alfred Russel Wallace during his 19th-century travels through the East Indies. Even before the discovery of plate tectonics, Wallace postulated that the western islands must have once been interconnected and linked to the Asian mainland.


So, in 1859, he first sketched a line of demarcation between the zones which came to be known as the Wallace line.

The Invisible Barrier Keeping Two Worlds Apart

According to a video by PBS Eons, Wallace was onto something all those years ago. Researchers would later come to believe that the land masses on other sides of the line were once separate continents brought together by tectonic shifts.

“Today, we know them as the paleo continents of Sunda in the west and Sahul in the east, both of which existed during the ice ages when more water was locked up in ice and sea levels were lower. Wallace didn't know it, but while they’re pretty close now, the two partly-sunken continents used to be much, much further apart,” the video says. “So even though the species of each side are neighbors now, they’d been evolving separately for eons, their two worlds only colliding fairly recently in evolutionary terms.”

Popular

What would happen if all the Earth's ice melted?

There will be serious problems on both U.S. coasts.

What would happen if all the ice melted?

Ten percent of the land area on Earth is covered with glacial ice, which includes ice sheets on Greenland and Antarctica, ice caps and glaciers. Unfortunately, 750 billion tons of Earth’s ice is melting yearly due to climate change.

If climate change isn’t stopped, this will lead to disastrous consequences for the entire planet.

"As a result of this, ice around the world is melting and raising the planet's sea level. The oceans already rose 6 centimeters during the course of the 19th century. But they rose by 19 centimeters during the 20th century, over 3 times faster than they rose in the previous century,” says a video produced by Real Life Lore. “NOAA estimates that global sea level could rise by up to 2.5 meters by the year 2100. Which would have devastating consequences."

Real Life Lore has over 7 million subscribers to its videos covering geography and world populations.


The video speculates that if all the ice on Earth melted, it would raise the global sea level by an incredible 68.3 meters (224 feet).

This would have a disastrous impact on the United States.

How Will Earth Change If All the Ice Melts?

“In North America, Vancouver, Seattle, Portland, and most of San Diego and Los Angeles would be underwater. San Francisco would be an island and San Jose would be destroyed by the waves,” the video says.

There would be catastrophic damage to the East Coast as well. The ocean would expand to swallow the entire states of Florida and Delaware, almost all of Long Island, and the cities of New York, Philadelphia, Baltimore, Washington D.C. and Boston.

This video depicts a rather grim future, but the positive side of the story is that it can be avoided. Each of us has the responsibility to take whatever measures we can to revert the effects of climate change and to push for policies that stop the creation of greenhouse gasses.

How did North get to be "up"?

When asked to point to North on a map, we point toward the top. Odds are, when you think of the word, you even associate it with “up.” (Unless, of course, you’re a “Game of Thrones” fan, then you might picture a fictional medieval family with very cool dogs and very, very bad luck.)

But why is North always “up”? Has it always been this way? If not, what was “up” before North? Does any of this matter in a digital age where directions are oriented in an instant?

These questions and more are answered by Jay Foreman and Mark Cooper-Jones, two comedians with a passion for geography who host a YouTube series called "Map Men."

Being Brits, the Map Men tend to cover English topics like explaining “Why East London doesn’t have any bridges” or “What went wrong with the Tube Map.” But their latest video goes into more universal territory, breaking down why nearly every map in the world has North on the top.

Though cartographers have experimented with drawing maps that have words written in multiple directions, they weren’t very user-friendly, and therefore never made it to the mainstream. So, generally speaking, all maps need a top and bottom. That we have agreed on.

ancient maps

Yeah…that's not confusing at all…

Jay Foreman/Youtube

However, earlier cultures would certainly disagree that North belongs on a map’s top. That spot, in their mind, belonged to East, since it produced light, daytime, and all things symbolizing happiness. North, incidentally, symbolized darkness and evil. So, with this 90-degree change of perception in mind, an ancient map would actually have North as East, West as South, South as East and North as West. Are you dizzy yet?

This was how most European maps would have looked well into the 15th century. Although no maps survived from this time period, there are plenty of linguistic clues to prove their existence, such as words in Sanskrit meaning both “South” and “to the right,” for instance.

Going back even further, the ancient Egyptians had South at the top of the map. Considering that so much of Egyptian culture is connected to the sun, one would think they would have the direction that brings the sun every morning on the top of their maps. But as Foreman explains, they oriented their map to the apparent source of the Nile River. The Egyptian might have been ceremonious, but they were also quite practical.

ancint egypt

These guys are hilarious.

Jay Foreman/Youtube

So, how did the North rise up?

Ironically it happened as Eurpoeans were heading West. During The Age of Exploration, explorers began incorporating the use of compasses, which are magnetized toward Earth’s poles, to improve their navigation. The Chinese inventors who created the compass originally decided that the needle pointed toward the South. However, Europeans had already been using the North Star in their navigation for years, and were inclined to keep doing so once they got their hands on the tool.

This innovation helped Europeans spread several Western ideologies, including a North-favoring map, throughout the entire globe. And here we are.

Nowadays, thanks to technology, most digital maps we interact with on a regular basis show whichever direction we are facing as “up,” also making this whole where-does-North-point story a moot one. Except there are still subtle, yet negative ways this might be influencing our world view, since humans naturally read things that are at the top as being superior to things at the bottom.

Going back to “Game of Thrones,” the Starks of the North = good guys. The Lannister of the South = bad guys. Just sayin’.

These are only the bullet points of what Foreman and Cooper-Jones covered, and it doesn't begin to embody their incredible wit and hilarious delivery. Watch them do their thing below:

There was one correction that viewers wanted to make. At one point, Cooper-Jones jokes that even J.R.R. Tolkien didn’t fathom a different orientation while creating the fictional map of Middle Earth for his “Lord of the Rings” trilogy, just to illustrate how deeply ingrained the idea is in our collective psyche.

However, one impressive LOTR fan noted that Tolkien DID, in fact, get creative with orientation, writing, “Dwarves put East up on their maps,” and “the Elvish words for ‘north’ and ‘south’ are related to the words for ‘right’ and ‘left’ respectively,” which “strongly implies that Elves and other peoples influenced by them usually drew maps with West upwards.” Proving yet again how in-depth Tolkien’s knowledge is.

It’s interesting to think about how closely linked geography and psychology are. Even something that appears to be a scientific fact, like “North is up,” is really more of a reflection of the times. It’s even more interesting to think about how concepts like these might change along with our own paradigms over time.