The urban poor are particularly in danger from the effects of climate change because of substandard housing and poor environmental conditions, says Peter Williams of the ARCHIVE Institute.

Cities assessing the health impacts of planning, driving-to-qualify for health insurance, and the bike-sharing troubles plaguing Paris -- all on this week's Planetizen News Brief, airing weekly on "Smart City". Read, listen or download.

Can today's contemporary architects, schooled in modernism and invention, in fact incorporate the sort of green building materials and techniques that make a real difference? And does design really matter? Josh Stephens takes a look.

Famed landscape architect Lawrence Halprin died this week at the age of 93. Halprin is highly regarded in his field, but in terms of urban planning many of his designs have not stood up to the test of time. Managing Editor Tim Halbur explores his legacy.

Matthew McKinney argues that regional governance is essential to address transboundary issues like climate change, wildlife corridors, shared water resources, and energy development.

With the emergence of new traditional design patterns among contemporary architects, the standards and rules that have defined historic preservation are becoming obsolete. Steven W. Semes calls on planners and designers to create a new ethic of harmonious intervention into historic settings.