December 29, 2013, 5am PST
Many of Poland's older, iconic Communist buildings require major renovations and are seen as unwelcome reminders of a bygone time. But many people see them as historic landmarks that merit preservation.
November 22, 2013, 6am PST
In order to stave off the worst climate change scenarios, experts have recommended that the world's countries must aggressively expand their efforts to limit greenhouse gas emissions. Some surprising countries are headed in the opposite direction.
October 15, 2013, 1pm PDT
A new report by the European Environment Agency points to progress in cutting the continent's air pollution problem. However, up to 98% of Europe's urban residents are exposed to hazardous air, and in places like Bulgaria the danger is acute.
November 27, 2011, 5am PST
A subway in Warsaw, Poland now features a system that captures the energy created by braking train cars for reuse elsewhere in the system.
April 6, 2011, 12pm PDT
A new exhibit in Poland celebrates the urban designs of Jan Gluszak, a "poet and philosopher, architecture visionary, dreamer and idealist" who envisioned new ways of living.