Recent Posts by Crystal
Urbanization and Environmental Sustainability (Part I: Global Trends)
Urbanization and Environmental Sustainability (Part I: Global Trends)
Crystal Davis looks at urbanization and its impact on environment and development in Part I of a three-part series. Check out other analysis by Crystal at http://earthtrends.wri.org. Now home to half of the world’s people, cities are increasingly at the ...
Forget Cash, Cooking Oil Can Buy Your Bus Pass
Forget Cash, Cooking Oil Can Buy Your Bus Pass
In Kilmarnock, Scotland, bus passengers will soon be able to pay their fare with used cooking oil instead of cash. Eight buses carrying over 15,000 passengers a week will run on 100% biodiesel generated from used cooking oil and tallow, ...
Satellites for Sustainability
Satellites for Sustainability
Using satellites to map pollution. Photo by kennethg from Flickr. With the help of satellites, scientists are now measuring and mapping concentrations and global movements of air-pollution and, through a cool new project known as TEMIS, have made near-real time ...
The Hidden Costs of Personal Mobility
The Hidden Costs of Personal Mobility
A biker struck by a car in Beijing. Courtesy of pmorgan of Flickr. It’s helpful to think about traffic safety with the following thought experiment: What would happen in a democratic forum, if the world’s population, represented by elected officials, ...