Physicist Geoffrey West has found that simple, mathematical laws govern the properties of cities — that wealth, crime rate, walking speed and many other aspects of a city can be deduced from a single number: the city’s population. In this mind-bending talk from TEDGlobal he shows how it works and how similar laws hold for organisms and corporations.
http://www.ted.com/talks/geoffrey_west_the_surprising_math_of_cities_and_corporations.html
Tagged with ted cities urbanisation population corporations
In the 1960s, Stewart Brand became one of the country’s first and most famous champions of a new ecological awareness. His Whole Earth Catalog spoke to a generation of hippies and back-to-nature commune dwellers.
Now, at 70, Stewart Brand is calling on environmentalists to reframe their understanding of the problem — and solutions. It’s too late for back-to-nature, he says. Global warming is beyond that.
To survive now, Brand says, we need nuclear power, genetic engineering, giant cities. We must manage nature or lose civilization.
This hour, On Point: In the face of global warming, Stewart Brand redefines green.
http://www.onpointradio.org/2009/10/stewart-brands-ecopragmatism