Jessica Hsu

Under the Kyoto Protocol, developed countries set targets for cutting carbon emissions relative to 1990 levels by 2012. As the globe gathers to discuss extending the expiring agreement, Duncan Clark examines its effectiveness.

As part of a broader effort to encourage less vehicular traffic city-wide, D.C. is expanding permit parking and reducing on-street parking in some of the city's most crowded neighborhoods. Not all are happy with the changes, reports Tim Craig.

Simon Romero discusses how new development in Brazil's fastest growing region is depleting the world’s largest remaining area of tropical forest.

Alex Ulam discusses the challenges of redesigning mid-century urban landscapes to accommodate contemporary tastes and social activities, drawing on examples like Dan Kiley's North Court at Lincoln Center and Boston City Hall Plaza.

Hurricane Sandy caused power outages that also prevented the use of hundreds of solar panels in the greater New York area. Solar companies are now working on decentralizing the system to make solar energy a backup source, reports Diane Cardwell.