THE AMERICA I LEARNED ABOUT AS A KID NEVER EXISTED
===================================================

Published: September 9, 2026

When I was a kid, I was taught a pretty straightforward version of the
history of the Americas.

There were Native Americans here, of course, and there were some spectacular
civilizations like the Maya, Aztec and Inca. But outside those centers, the
picture presented to us was mostly one of enormous empty spaces: endless
forests, gigantic herds of animals, scattered villages, and a continent that
was still largely wilderness when Europeans arrived.

That version of history has not aged well.

One of the most fascinating things about getting older is realizing that
history can change underneath you. The events themselves do not change, but
our understanding of them can change enormously as archaeology, genetics,
remote sensing and other sciences give us evidence that simply wasn't
available when we were sitting in elementary-school classrooms.

And the Americas are turning into one of the biggest examples.


THERE WERE A LOT MORE PEOPLE HERE
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Nobody knows the exact population of the Americas in 1492, and estimates are
still debated. But modern research has pushed us a long way from the idea of
a nearly empty hemisphere.

One large synthesis of published estimates calculated approximately 60.5
million people living in the Americas before European arrival, with a
plausible range stretching considerably higher and lower. The same
researchers estimated that Indigenous populations subsequently declined by
roughly 90 percent during the following century.

Think about that number for a moment.

Sixty million people.

Not sixty million hunter-gatherers randomly wandering through untouched
wilderness. These were societies farming land, managing forests, burning
grasslands, constructing roads, digging canals, building settlements,
hunting animals, moving goods and deliberately altering ecosystems.

Geographer William Denevan famously called the older idea the "pristine
myth." His research argued that the American landscape around 1492 had been
heavily influenced by people almost everywhere. Forest composition had been
altered. Grasslands had been created and maintained. Wildlife populations
were affected. Roads, fields, earthworks and settlements were widespread.

Then something catastrophic happened.


EUROPEANS DIDN'T NECESSARILY SEE THE WORLD THAT EXISTED IN 1492
================================================================

European diseases collided with populations that had no previous exposure to
many of them. Smallpox, measles, influenza and other infectious diseases
caused devastating epidemics.

But even saying "disease killed everybody" oversimplifies it. Warfare,
enslavement, forced movement, destruction of food systems and colonial
disruption made the catastrophe worse. Different regions were struck at
different times and to different degrees. Historians still debate how often
epidemics traveled far ahead of direct European contact.

What is not seriously disputed is the enormous demographic collapse.

And that creates a strange problem with the history many of us learned.

Later Europeans exploring the interior were sometimes looking at the
aftermath, not the original civilization.

Imagine a town of 5,000 people losing 4,500 inhabitants.

Fields stop being planted.

Trails disappear.

Wooden structures rot.

Drainage systems fail.

Forest grows over settlements.

Controlled burns stop.

Animal populations change.

Within a few generations, somebody could walk into that landscape and
conclude that nobody had ever done much of anything there.

That may be remarkably close to what happened in parts of the Americas.

Denevan made the startling argument that in some ways human activity was
actually less visible in the Americas around 1750 than it had been in 1492.

That completely reverses the childhood picture.


THEN WE INVENTED LIDAR
======================

This is where the story has gotten downright amazing during our lifetimes.

Archaeologists can now fly over forests with LiDAR, which uses laser pulses
to map the ground beneath the vegetation.

And underneath supposedly empty jungle, cities are appearing.

In the Bolivian Amazon, LiDAR revealed major centers belonging to the
Casarabe culture, including monumental earthworks, pyramidal structures,
canals, reservoirs and elevated causeways connecting settlements. Researchers
describe it as low-density urbanism, a form of city organization quite
different from the packed stone cities we usually imagine.

In Ecuador's Upano Valley, researchers have found thousands of constructed
platforms connected by roads and surrounded by agricultural infrastructure.

And this leads to a realization that I don't think has fully sunk into
popular culture yet:

The Amazon was not necessarily an enormous untouched jungle with occasional
tribes living inside it. Parts of it were inhabited and engineered landscapes
that later became jungle.

Estimates remain uncertain, but researcher William Denevan has argued that
Greater Amazonia alone may have supported at least five to six million people
around 1492.

Suddenly those strange earthworks, terraces, roads and settlements being
found with drones and lasers make a lot more sense.

We're looking at the remains of a world whose population collapsed.


EVEN THE BUFFALO STORY GETS WEIRDER
===================================

This also changes how we should think about wildlife.

Those enormous animal populations encountered by later explorers are
frequently presented as evidence of what North America looks like when
humans leave nature alone.

But humans hadn't left it alone.

Native peoples had been part of these ecosystems for thousands of years.

One particularly fascinating example involves the American bison.

The National Park Service notes that Native hunting likely limited the
abundance and distribution of bison in eastern North America before 1500,
and that bison expanded in some areas during the 1600s after Indigenous
populations were devastated by introduced diseases.

That doesn't mean the legendary Great Plains herds existed simply because
"the Indians died."

Bison ecology is much more complicated than that. Climate, rainfall, drought,
fire, wolves, horses, Indigenous hunting, migration and later commercial
hunting all affected their numbers. The enormous Plains populations observed
in the 1700s and early 1800s developed from a complicated ecological system.

But the larger point remains remarkable:

Some of the wildlife abundance Europeans interpreted as pristine nature may
actually have been a landscape experiencing one of the greatest human
population crashes in history.

The ecosystem had lost millions of people who had previously been hunting,
farming, burning, planting and managing it.

Of course nature changed.


THE WILDERNESS MAY HAVE BEEN THE RUINS
======================================

That's the part that blows my mind.

We grew up with imagery of Europeans entering an ancient untouched
wilderness.

But in some places they may instead have been entering something much
stranger:

a post-apocalyptic landscape.

Not science-fiction apocalypse.

A real one.

Villages abandoned.

Agricultural land reclaimed by forest.

Roads disappearing beneath vegetation.

Human-managed ecosystems changing rapidly.

Wildlife expanding into areas where human pressure had suddenly vanished.

And surviving Indigenous communities trying to continue after losing
staggering portions of their populations.

The jungle wasn't proof that civilization had never been there.

The jungle may have been what grew after civilization collapsed.

And now, centuries later, we're flying drones and lasers over that vegetation
and discovering the geometry underneath it.

Roads.

Platforms.

Canals.

Fields.

Settlements.

Cities.

That is one of the things I love about science. Changing your understanding
of history isn't admitting that everything we learned was a lie. It means we
obtained better evidence.

The Americas of 1492 are slowly coming back into view.

And they are looking far more populated, engineered, interconnected and
complicated than the continent I was taught about as a kid.


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