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You are here: Home / Archives for population

population

Dehorning Rhinos

September 30, 2016 By WAMC WEB

https://earthwiseradio.org/wp-content/uploads/2016/09/EW-09-30-16-Dehorning-Rhinos.mp3

At the beginning of the 20th century, there were about 500,000 rhinos across Africa and Asia.  By 1970, the number was down to 70,000.  Today, there are less than 30,000 rhinos in the wild.  The number of black rhinos dropped to as low as 2,300 in 1993.  Aggressive conservation efforts have brought their numbers up to over 5,000 today.

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Wiping Out Our Relatives

September 20, 2016 By WAMC WEB

https://earthwiseradio.org/wp-content/uploads/2016/09/EW-09-20-16-Eastern-Gorillas.mp3

We recently highlighted the plight of orangutans.  Following years of failed conservation measures, all orangutans are now listed as critically endangered by the International Union for the Conservation of Nature.  The Sumatran orangutan had been listed as critically endangered for nearly two decades, but the Bornean orangutan was a recent addition.  According to the IUCN, all orangutans have an “extremely high risk of extinction in the wild.”  

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Whale Sharks

September 9, 2016 By WAMC WEB

https://earthwiseradio.org/wp-content/uploads/2016/08/EW-09-09-16-Whale-Sharks.mp3

Whale sharks are the largest fish in the sea.  They can grow more than 40 feet in length, weigh up to 47,000 lbs, and have a lifespan of about 70 years.  They can be found cruising in the open waters of tropical oceans.  But despite being enormous, whale sharks are no threat to humans.  The docile beasts, which feed almost exclusively on plankton, have often been referred to as “gentle giants.”

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Sharks In Hot Water

August 25, 2016 By WAMC WEB

https://earthwiseradio.org/wp-content/uploads/2016/08/EW-08-25-16-Sharks-in-Hot-Water.mp3

The majestic great white shark has been around for a very long time.  Its evolutionary origin dates back 14 to 16 million years.  And while great whites still enjoy decent populations off the coasts of Canada, Australia, and the United States, the same can’t be said for South Africa’s great whites. 

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Growing More Food On Less Land

May 6, 2016 By WAMC WEB

https://earthwiseradio.org/wp-content/uploads/2016/05/EW-05-06-16-Growing-More-Food.mp3

There are predictions that the world’s population could reach 10 billion by the year 2050.  Whether population growth can be slowed down enough to prevent this remains to be seen.  Regardless, it is clear that we need to figure out how to feed many more people than we have today and we are not even doing that good a job of feeding the current population.

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Coal And Water

April 19, 2016 By WAMC WEB

https://earthwiseradio.org/wp-content/uploads/2016/04/EW-04-19-16-Coal-and-Water.mp3

We recently highlighted how safe drinking water is in short supply.  According to research published in the journal Science Advances, at least two thirds of the global population – more than four billion people – live with severe water scarcity for at least one month every year.  And 500 million people around the world face water scarcity all year. 

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Ecology And Designing Future Cities

January 4, 2016 By WAMC WEB

https://earthwiseradio.org/wp-content/uploads/2015/12/EW-01-04-16-Building-with-Nature.mp3

When most people hear the word ‘ecology’ – chances are it conjures up images of scientists working in distant, wild landscapes, such as old growth forests or remote mountain lakes. Increasingly, however, ecological studies are focused on urban and suburban areas.

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Climate Change And The Global Food System

December 24, 2015 By WAMC WEB

https://earthwiseradio.org/wp-content/uploads/2015/12/EW-12-24-15-Global-Food-System.mp3

One of the most troubling aspects of global climate change is its potential impact on the production, distribution and quality of food.   A report issued at the 2015 Paris Climate Conference focused on identifying climate change impacts on global food security.  Food security is the ability of people to obtain and use sufficient amounts of safe and nutritious food.  Even without the impact of climate change, food security is a challenge because of increasing population, poverty, and changing eating habits.

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Human Carbon

December 17, 2015 By WAMC WEB

https://earthwiseradio.org/wp-content/uploads/2015/12/EW-12-17-15-Human-Carbon.mp3

There is a powerful correlation between the rise of the human population and the rise of atmospheric CO2 during the past few decades. Could the carbon dioxide we emit when we breathe be a factor in global warming? According to biogeochemist Bill Schlesinger, the answer is a resounding no. Here’s why.

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The Environmental Movement Works

September 17, 2015 By EarthWise

pollution

https://earthwiseradio.org/wp-content/uploads/2015/09/EW-09-17-15-Environmental-Action.mp3

When each day seems to bring more bad news about the health of our planet, it can be easy to wonder if the environmental movement is working. But a new study in the Proceedings of the National Academy of Sciences has found that, at the state level, environmentalism is linked with lower carbon emissions.

[Read more…] about The Environmental Movement Works

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