An Urban World: UNICEF's new data visualization of urban population growth over the next 40 years.This graphic depicts countries and territories with 2050 urban populations exceeding 100,000. Circles are scaled in proportion to urban population size. Hover over a country to see how urban it is (percentage of people living in cities and towns) and the size of its urban population (in millions).
Earth's crust first formed at least 4.4 billion years ago, just 160 million years after the formation of our solar system, a new study has found. A time-line of the history of our planet places the formation of the Jack Hills zircon and a "cool
"When you combine a street and a road, you get a STROAD, one of the most dangerous and unproductive human environments. To get more for our transportation dollar, America needs an active policy of converting STROADs to productive streets or high capacity roadways."
Cashew nuts have become a global industry, yet small-scale farmers in Ghana are battling to get a fair return for their work (#Ghana’s cashew nut farmers struggle to profit from fruits of their labour http://t.co/7pJ73h2LIS...
Indonesia has the largest share of the world's mangroves — coastal forests that have adapted to saltwater environments. They play important environmental and ecological roles.
Mangroves play a key role of acting as an ecological buffer in coastal region that provide the area with resilience against tsunamis, hurricanes and other forms of coastal flooding. Their role in carbon sequestration is also vital as energy emissions globally continue to rise. So let's jump scales: how are global issues locally important? How is the local deeply global? How can stakeholders at either scale find common ground with the other?
http://www.ted.com Have we used up all our resources? Have we filled up all the livable space on Earth? Paul Gilding suggests we have, and the possibility of...
This provocatively title TED talk would be an excellent resource for discussing sustainable development. What are the economic, environmental, political and cultural ramifications of suggested policies that seek to lead towards sustainable development? What are the ramifications of not changing policies towards sustainable development?
Colliding continents and cracks in the Earth’s crust make for some remarkable scenery in western China.
Just south of the Tien Shan mountains, in northwestern Xinjiang province, a remarkable series of ridges dominate the landscape. The highest hills rise up to 1,200 meters (3,900 feet) above the adjacent basins, and they are decorated with distinctive red, green, and cream-colored sedimentary rock layers. The colors reflect rocks that formed at different times and in different environments. When land masses collide, the pressure can create what geologists call “fold and thrust belts.” Slabs of sedimentary rock that were laid down horizontally can be squeezed into wavy anticlines and synclines.
The ridge is noticeably offset by a strike-slip or “tear” fault in the image showing the Piqiang Fault, a northwest trending strike-slip fault that runs roughly perpendicular to the thrust faults for more than 70 kilometers (40 miles). The colored sedimentary rock layers are offset by about 3 kilometers (2 miles) in this area.
This is an excellent video for population and demographic units, but also for showing regional and spatial distinctions (since terms like 'overpopulation' and 'carrying capacity' inherently have different meanings at different scales).
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