What made the world the way it is? The spread of people, ideas and goods--Geographers refer to this as diffusion and these 5 podcasts all center on what factors promote the spread of some phenomena, and what obstacles and barriers exist to the diffusion of others.
Tags: podcast, medical, diffusion, culture, popular culture, globalization.
"While people often say that borders aren’t visible from space, the line between Kazakhstan and China could not be more clear in this satellite image. Acquired by the Landsat 8 satellite on September 9, 2013, the image shows northwestern China around the city of Qoqek and far eastern Kazakhstan near Lake Balqash.
The border between the two countries is defined by land-use policies. In China, land use is intense. Only 11.62 percent of China’s land is arable. Pressed by a need to produce food for 1.3 billion people, China farms just about any land that can be sustained for agriculture. Fields are dark green in contrast to the surrounding arid landscape, a sign that the agriculture is irrigated. As of 2006, about 65 percent of China’s fresh water was used for agriculture, irrigating 629,000 square kilometers (243,000 square miles) of farmland, an area slightly smaller than the state of Texas.
The story is quite different in Kazakhstan. Here, large industrial-sized farms dominate, an artifact of Soviet-era agriculture. While agriculture is an important sector in the Kazakh economy, eastern Kazakhstan is a minor growing area. Only 0.03 percent of Kazakhstan’s land is devoted to permanent agriculture, with 20,660 square kilometers being irrigated. The land along the Chinese border is minimally used, though rectangular shapes show that farming does occur in the region. Much of the agriculture in this region is rain-fed, so the fields are tan much like the surrounding natural landscape."
Tags: remote sensing, land use, environment, geospatial, environment modify, food, agriculture, agricultural land change.
Climate change is affecting wildlife in a lot of serious, and occasionally weird, ways. It’s destroying the icy habitats of polar bears and walruses. It’s driving fish species out of their normal habitats and taking away the food supplies of seals, sea lions and whales. It’s even causing bumblebees’ tongues to shrink.
Now, scientists have revealed another unexpected climate effect: It may be disrupting the sex ratio among baby sea turtles.
Finding Materials: This site is designed for geography students and teachers to find interesting, current supplemental materials. To search for place-specific posts, browse this interactive map. To search for thematic posts, see http://geographyeducation.org/thematic/ (organized by the APHG curriculum). Also you can search for a keyword by clicking on the filter tab above.
"A 3-minute journey through the last 250 years of our history, from the start of the Industrial Revolution to the Rio+20 Summit. The film charts the growth of humanity into a global force on the equivalent scale to major geological processes."
For far too long, many people have considered family life and urban life as being mutually exclusive. That trend is slowly reversing, as more and more parents choose to raise their kids in urban areas. However, city builders often fail to consider their smallest, most vulnerable users. As Enrique Peñalosa famously said: “”Children are a …
Since 1999, NASA has used ASTER (Japan's Advanced Spaceborne Thermal Emission and Reflection Radiometer) to gather images of the Earth's surface, providing a way to 'map and monitor the changing surface of our planet.' They've mapped 99% of the planet's surface over the years, generating nearly three million images, showing all kinds of things -- 'from massive scars across the Oklahoma landscape from an EF-5 tornado and the devastating aftermath of flooding in Pakistan, to volcanic eruptions in Iceland and wildfires in California.'
And now, NASA is letting the public download and use those images at no cost.
"Yes, globalization. For many people, that word conjures up, at best, images of container ships moving manufactured goods from far-flung factories. At worst, it harkens back to acrid debates about trade deficits, currency wars and jobs moving to China. In fact, since the Great Recession of 2008, the global flow of goods and services has flattened, and cross-border capital flows have declined sharply. But globalization overall isn't on the wane. Like so much in our world today, it has reinvented itself by going digital."
"Food. It’s something we all think about, talk about, and need. Food has been one major topic of interest at National Geographic because it connects all of us to our environment. The recent global population projections for the year 2100 just went up from 9 billion to 11 billion, making the issues of food production and distribution all the more important. For the last 3 years I’ve stored podcasts, articles, videos, and other resources on my personal site on a wide range of geographic issues, including food resources. I thought that sharing 10 of my personal favorite resources on the geography of food would be helpful to understand our changing global food systems."
"Seldom has it been more important for Americans to form a realistic assessment of the world scene. But our current governing, college-educated class suffers one glaring blind spot.
Modern American culture produces highly individualistic career and identity paths for upper- and middle-class males and females. Power couples abound, often sporting different last names. But deeply held religious identities and military loyalties are less common. Few educated Americans have any direct experience with large groups of men gathered in intense prayer or battle. Like other citizens of the globalized corporate/consumer culture, educated Americans are often widely traveled but not deeply rooted in obligation to a particular physical place, a faith or a kinship."
A Human Geography Resource; Especially for Teachers
The Human Imprint is home to everything Human Geography related for the student, educator, and the every day Joe/Jane. This site includes geographic related stories, lesson plans, and other links that bring us closer to understanding the “why of where.”
Anne-Laure Fréant talks about the importance of geographic knowledge in today's society. Kirk Goldsberry mentioned in “The Importance of Spatial Thinking” that “Harvard eradicated its Geography Department in the 1940′s, and many universities followed suit”. Indeed, not only has geography never been part of business programs, it gradually vanished from education fields that matter in prestigious schools, with no major revival since the 1940′s.
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