Animation: The Population Pulse of a Manhattan Workday
Connect with us

Misc

Animation: The Population Pulse of a Manhattan Workday

Published

on

In cities around the world, the offices and storefronts of the downtown core fill up with people during the workday to keep the wheels of commerce turning.

Nowhere is this phenomenon as pronounced as in Manhattan, which swells to an incredible four million people during work hours. Today’s animation, created by Justin Fung, is a dramatic, eye-opening look at the “pulse” of America’s largest city.

The Population Pulse of a Manhattan Workday
Also, check out the fancy interactive version of this visualization.

This dramatic shift in population on a daily basis is made possible by Manhattan’s unparalleled carrying capacity, or its ability to facilitate an inflow of millions of people who come for all sorts of reasons. Many of the metropolises with the most dramatic daytime population spikes, such as Washington, D.C. and New York, also have much higher rates of transit ridership than the average city.

Not surprisingly, three surrounding boroughs have the largest daytime population decreases in the entire country.

BoroughDaytime Population Change
Queens-366,000
Brooklyn-297,000
Bronx-162,000

Outside the Big Apple

While many parts of Manhattan remain lively in the evening, many downtown cores around the country simply empty out.

This stark contrast is particularly noticeable in low-rise communities with large employment hubs such as Redmond, Washington or Palo Alto, California, both of which are home to sprawling tech campuses.

Daytime population increases

In the case of the nation’s capital, the city is a powerful magnet for talent. As well, Washington’s unique position between state lines means that people have the option of residing in Virginia or Maryland and easily commuting in.

Higher Resting Heartbeat

Thanks to a renewed interest in urban living, many cities are starting to see an uptick in the number of residents who choose to skip the long commute and just live where the action is.

This trend is particularly pronounced in Canadian cities such as Vancouver and Toronto. The latter city’s downtown population is expected to double over the next 25 years, while Vancouver’s sustained real estate boom has added tens of thousands of residents to the downtown area.

In the U.S., Seattle has demonstrated significant urban residential growth. Since 2010, the population of downtown and surrounding neighborhoods has grown by an impressive 18%, and 1-in-5 people moving to the city choose to live in the downtown area.

The 2020 U.S. Census will provide a much better clearer picture of how this trend is playing out.

Subscribe to Visual Capitalist
Click for Comments

Demographics

Population Boom: Charting How We Got to Nearly 8 Billion People

In the next year or so, humanity is expected to pass the 8 billion person milestone. These charts and maps put global population growth into context.

Published

on

Today, the global population is estimated to sit at 7.91 billion people.

By the end of 2022 or within the first months of 2023, that number is expected to officially cross the 8 billion mark. Incredibly, each new billion people has come faster than the previous—it was roughly only a decade ago that we crossed the 7 billion threshold.

How did we get here, and what has global population growth looked like historically?

In this series of six charts from Our World in Data, we’ll break down how the global population got to its current point, as well as some big picture trends behind the data.

#1: Mapping the Population Over 5,000 Years

New York, São Paulo, and Jakarta were not always bustling metropolises. In fact, for long parts of the history of civilization, it was unusual to find humans congregating in many of the present-day city locations we now think of as population centers.

The human population has always moved around, seeking out new opportunity and freedoms.

5,000 years of population movement

As of 3,000 BC, humans could be mainly found in Central America, the Mediterranean, the Fertile Crescent, and parts of India, Japan, and China. It’s no coincidence that that agriculture was independently discovered in many of these same places during the Neolithic Revolution.

#2: The Hockey Stick Curve

For even more context, let’s zoom way out by using a timeline that goes back to when woolly mammoths still roamed the Earth:

Annual World Population since 10,000 BC

From this 10,000-foot view, it’s clear that human population growth started going exponential around the time of the Second Agricultural Revolution, which started in the 17th century in Britain. This is when new technologies and farming conventions took root, making it possible to grow the food supply at an unprecedented pace.

Soon these discoveries spread around the world, enabling population booms everywhere.

#3: The Time to Add 1 Billion

The data and projections in this chart are a few years old, but the concept remains the same:

Time to Add 1 Billion in Population

It took all of human history until 1803 to reach the first billion in population. The next billion took 124 years, and the next 33 years. More recent billions have come every dozen or so.

So why then, are future billion people additions projected to take longer and longer to achieve?

#4: The Growth Rate is Shrinking

Because of demographics and falling fertility rates, the growth rate of the global population has actually been on a downward trend for some time.

Falling Population Growth Rate

As this growth rate gets closer to zero, the population curve has become less exponential like we saw in the first graphs. Population growth is leveling out, and it may even go negative at some point in the future.

#5: The Regional Breakdown

Although the rate of population growth is expected to slow down, there are still parts of the world that are adding new people fast, as you can see on this interactive regional breakdown:

Since 1973, Asia has doubled its population from 2.3 billion to 4.6 billion people.

Comparatively, over the same time frame, Europe has gone from 670 million to 748 million, equal to just an 11% increase.

#6: The Present and Future of Population Growth

Population projections by groups like the United Nations see the global population peaking at around 10.9 billion people in 2100.

World Population 1700 to 2100

That said, there isn’t a consensus around this peak.

Organizations like the Institute for Health Metrics and Evaluation (IHME) have a different perspective, and they have recently modeled that the global population will top out at 9.7 billion people by the year 2064.

As we climb to surpass the 8 billion mark in the coming months, it will be interesting to see what path humanity ends up following.

Continue Reading

Green

Visualizing the Accumulation of Human-Made Mass on Earth

The amount of human-made (or anthropogenic) mass, has now exceeded the weight of all life on Earth, including humans, animals, and plants.

Published

on

Visualizing the Accumulation of Human-Made Mass on Earth

This was originally posted on Elements. Sign up to the free mailing list to get beautiful visualizations on natural resource megatrends in your email every week.

The world is not getting any bigger but the human population continues to grow, consuming more and more resources and altering the very environment we rely on.

In 2020, the amount of human-made mass, or anthropogenic mass, exceeded for the first time the dry weight (except for water and fluids) of all life on Earth, including humans, animals, plants, fungi, and even microorganisms.

In this infographic based on a study published in Nature, we break down the composition of all human-made materials and the rate of their production.

A Man-made Planet

Anthropogenic mass is defined as the mass embedded in inanimate solid objects made by humans that have not been demolished or taken out of service—which is separately defined as anthropogenic mass waste.

Over the past century or so, human-made mass has increased rapidly, doubling approximately every 20 years. The collective mass of these materials has gone from 3% of the world’s biomass in 1900 to being on par with it today.

While we often overlook the presence of raw materials, they are what make the modern economy possible. To build roads, houses, buildings, printer paper, coffee mugs, computers, and all other human-made things, it requires billions of tons of fossil fuels, metals and minerals, wood, and agricultural products.

Human-Made Mass

Every year, we extract almost 90 billion tons of raw materials from the Earth. A single smartphone, for example, can carry roughly 80% of the stable elements on the periodic table.

The rate of accumulation for anthropogenic mass has now reached 30 gigatons (Gt)—equivalent to 30 billion metric tons—per year, based on the average for the past five years. This corresponds to each person on the globe producing more than his or her body weight in anthropogenic mass every week.

At the top of the list is concrete. Used for building and infrastructure, concrete is the second most used substance in the world, after water.

Human-Made MassDescription1900 (mass/Gt)1940 (mass/Gt)1980 (mass/Gt)2020 (mass/Gt)
ConcreteUsed for building and infrastructure, including cement, gravel and sand21086549
AggregatesGravel and sand, mainly used as bedding for roads and buildings1730135386
BricksMostly composed of clay and used for constructions11162892
AsphaltBitumen, gravel and sand, used mainly for road construction/pavement 012265
MetalsMostly iron/steel, aluminum and copper131339
OtherSolid wood products, paper/paperboard, container and flat glass and plastic461123

Bricks and aggregates like gravel and sand also represent a big part of human-made mass.

Although small compared to other materials in our list, the mass of plastic we’ve made is greater than the overall mass of all terrestrial and marine animals combined.

Human-Made Mass Plastic

As the rate of growth of human-made mass continues to accelerate, it could become triple the total amount of global living biomass by 2040.

Can We Work It Out?

While the mass of humans is only about 0.01% of all biomass, our impact is like no other form of life on Earth. We are one of the few species that can alter the environment to the point of affecting all life.

At the current pace, the reserves of some materials like fossil fuels and minerals could run out in less than 100 years. As a result, prospectors are widening their search as they seek fresh sources of raw materials, exploring places like the Arctic, the deep sea, and even asteroids.

As the world population continues to increase, so does the pressure on the natural environment. It is an unavoidable fact that consumption will increase, but in an era of net-zero policies and carbon credits, accounting for the human impact on the environment will be more important than ever.

Continue Reading

Subscribe

Popular