CNN

For anyone who has ridden in a high-speed train, the idea of a derailment is terrifying. Last week's crash of an Alvia train in Spain made such fears seem less irrational. Yonah Freemark examines whether high-speed rail is a safe mode of travel.
Jul 28, 2013   CNN
British entrepreneur Roger Wade has built "[t]he most environmentally friendly shopping mall ever built." 'Boxpark,' which recently opened, is composed of 60 standard size shipping containers stacked two stories high by five rows wide.
Dec 7, 2011   CNN
Pilgrimages to holy sites around the world have caused large amounts of waste and pollution because of the large amount of people gathering together for one event and consumeristic habits, writes George Webster for CNN
Nov 10, 2011   CNN
Well, a good percentage of them do, with 13% of the country's 57,860 ultra high net worth individuals living in NYC.
Oct 19, 2011   CNN
The U.S. Army Corps of Engineers gave approval to kayakers and canoeists to paddle down a 1.5 mile strip of the L.A. River that is deemed by the federal government safe enough for public recreation, reports Michael Martinez for CNN.
Aug 24, 2011   CNN
The Manchester Ship Canal has gone underused for shipping goods for decades, but is now having a resurgence with the realization that barge freight can greatly reduce carbon emissions.
Aug 18, 2011   CNN
The personally rewarding and healthy activity of urban farming continues to solidify a foothold on Hong Kong high rises, in spite of the lack of support from the government.
Jun 30, 2011   CNN
CNN does a roundup that includes obvious leaders like Amsterdam and some less predictable choices like Chicago and Bogota, Colombia.
May 10, 2011   CNN
Between 2,000 and 3,000 people have taken over the Grande Hotel in Beira, Mozambique, and turned it into a small community of squatters.
Feb 11, 2011   CNN
With GPS technology ubiquitous, the lighthouse perched high on a cliff may soon become a relic.
Feb 5, 2011   CNN
Streetcars are increasingly seen as boons to local economies. And with a $130 million federal fund aimed at streetcar projects, some are expecting more systems to develop, according to this article. Others, though, still question the investment.
Dec 19, 2010   CNN