PG4C. Stay Current—The History of Human Population Growth

Staying current for Chapter 4 See non-chronological resources { Population Growth Contents } 2024-04-02. Population tipping point could arrive by 2030. [https://www.science.org/content/article/population-tipping-point-could-arrive-2030] By TYLER SANTORA, Science. Excerpt: Two point one: That’s how many children everyone able to give birth must have to keep the human population from beginning to fall. Demographers have long expected the […]

PG3C. Stay Current—Population Reproduction, Growth, and Change Over Time

Staying current for Chapter 3 { Population Growth Contents } 2024-01-05. Protecting and connecting landscapes stabilizes populations of the Endangered savannah elephant. [https://www.science.org/doi/10.1126/sciadv.adk2896] By RYAN M. HUANG , CELESTÉ MARÉ, ROBERT A. R. GULDEMOND , STUART L. PIMM, AND RUDI J. VAN AARDEA, Science. Excerpt: African savannahs cover …almost half of the continent, of which 10% is protected (1) and …16% sustain globally Endangered savannah elephants […]

PG2C. Stay Current—Patterns in Populations

Staying current for Chapter 2 { Population Growth Contents } 2019-10-11. Giant reptiles once ruled Australia. Their loss sparked an ecological disaster. By John Pickrell, Science Magazine. Excerpt: BRISBANE, AUSTRALIA—Saber-toothed cats, short-faced bears, and other ferocious mammals were the top predators of the ice age across most of the world. But not in Australia. Here, […]

PG1C. Stay Current—What Is a Population?

Staying current for Chapter 1 See non-chronological resources { Population Growth Contents } 2024-07-16. 5,000 feral pigs were killed to save a California national park. By Erin Rode for SFgate. Excerpt: Today, the major islands of Channel Islands National Park appear dominated by tiny foxes. …until recently, the unique species was considered endangered, driven nearly to extinction […]

PG8. Choosing a World

Chapter 8 { Population Growth Contents } It has been almost two hundred years since Thomas Malthus began the discussion of human population growth.  The discussion continues even today in a world six times more populated than it was in Malthus’ day. Many people are concerned about the problem, but the majority of people are […]

PG7. Can We Limit Human Population Growth?

Chapter 7 { Population Growth Contents } CAIRO — Years ago, when the water buffalo gave plenty of milk and the pigeons and chickens were paraded nightly to the dinner table, Om Mahmoud was healthy and happy with the annual ritual of giving birth to a new baby: another pair of hands in the lush […]

PG6C. Stay Current—One Child

Staying current for Chapter 6 { Population Growth Contents } 2023-04-25. Hong Kong: some schools face closure as birthrate and exodus take toll. [https://www.theguardian.com/world/2023/apr/25/hong-kong-some-schools-face-closure-as-birthrate-and-exodus-take-toll] By Helen Davidson, The Guardian. Excerpt: Hong Kong schools are being forced to merge or prepare for closure as a decade-long decline in the birthrate and a recent exodus of residents […]

PG6. One Child

Chapter 6 { Population Growth Contents } Scenes from China’s “One Child” policy.  Episode 1 – The young girl She was frightened. She had not told anyone that she had missed her last two periods. Telling her parents was impossible. Her mother would be shocked, her father so angry she didn’t know what he would […]

PG5.1. How Much Land Does It Take to Produce Your Food?

{ Population Growth Contents } { All GSS Books } Investigation by David Masterman In this Investigation, you calculate the amount of land required to produce the food eaten by an individual for one year and compare the amount of land required to produce animal versus plant products. Background Humans require energy and their energy […]

PG5. The Environmental Impact of Populations

Chapter 5 { Population Growth Contents } More humans means more demands of nature. The demand for wood, wood products, and additional space for agriculture has resulted in worldwide loss of forests. What people all over the world are beginning to recognize is that the world’s resources are finite. There is just so much land, […]