Recent Posts by Crystal
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 https://earthtrends.wri.org. Now home to half of the world’s people, cities are increasingly at the ...
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, ...
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 ...
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, ...
