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overpopulation

The Science of Overpopulation
Image: iStockphoto.com/satori13

The Science of Overpopulation

Over the past 200 years, the global population has exploded from 1 billion to 7 billion. At this rate, the planet will have over 9 billion people by 2050 — yikes! Can the Earth support our soaring numbers?

The rising population raises questions about how we produce food and consume resources, especially water. Explore the facts, theories, and threats of overpopulation.

SciShow
The City Solution

The City Solution

Dense cities use less energy and require fewer resources. Take a look at these photos of urban renewal and growth. Click on “Feature Article” for more info on city solutions. More...

Images
National Geographic
The Breathing Earth Simulation

The Breathing Earth Simulation

Check out this mind-blowing simulation of births, deaths, and carbon dioxide emissions in every country. Do you think population growth plays a role in global warming? More...

Interactive
Breathingearth.net
U.S. and World Population Clock

U.S. and World Population Clock

In the U.S, a person is born about every 8 seconds. Watch the ever-moving numbers on these population clocks and find out which 10 countries are the most populated. More...

Images
U. S. Census Bureau
7 Billion: How Did We Get So Big So Fast?

7 Billion: How Did We Get So Big So Fast?

One thousand years ago, there were only a third of a billion people. How did the world population explode to 7 billion? More...

Video
LiveScience
Eye in the Sky: Overpopulation

Eye in the Sky: Overpopulation

The United Nations estimates that more than a billion people lack basic needs. Get more facts on overpopulation, click through an image gallery, and watch videos. More...

Interactive
National Geographic
Overpopulation

Overpopulation

Is population growth tied to our standard of living? How many people can the Earth support? Read up on different theories about overpopulation. More...

Article
Kids.Net.Au
Overpopulation Could Be People, Planet Problem

Overpopulation Could Be People, Planet Problem

Experts estimate that India will take China’s place as the most populated country in the world by 2050. Discover the dire consequences of overpopulation. More...

Article
CNN
Q&A: Stanford’s Paul Ehrlich Fears the Worst for a Planet with 7 Billion Residents

Q&A: Stanford’s Paul Ehrlich Fears the Worst for a Planet with 7 Billion Residents

The global population has more than doubled since Paul Elrich wrote his book,The Population Bomb. Find out what he has to say about today's population problems. More...

Article
Standford News
The Effect of Overpopulation on Guppies

The Effect of Overpopulation on Guppies

What happens when animals suffer from overpopulation? Try this experiment to find out how guppies respond to limited resources. More...

Activity
education.com
What Wiped Out St. Matthew Island’s Reindeer?

What Wiped Out St. Matthew Island’s Reindeer?

At one time, 6,000 reindeer roamed an island in the Bearing Sea. Today, there are none. Read about this classic story of wildlife boom and bust. More...

Article
Alaska Dispatch News
World Population

World Population

Humans can grow crops on only about 4% of the Earth's surface. Resources are limited, yet our population is growing. Watch this simulation of population growth. More...

Video
Population Connection

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