The Icehotel in Sweden, built in winter and vanishing in spring, is the original hotel carved from snow and ice bricks. It's also an art project; sculptors compete for the chance to carve out rooms.
Preservationists are struggling to renew the ancient Medina in Tunis — one of the oldest Arab Muslim cities and a warren of elegant doorways, fountains and faded palaces mansions.
Can wood replace steel in a 70-story skyscraper? Architects and biochemists at Cambridge think so. Meanwhile at MIT, rethinking cement is cutting down carbon emissions.
City planners rushed to erase divisions between East and West Berlin after the wall came down in 1989. But the fate of communist-era buildings can still provoke friction a quarter-century later.
Also on KQED.org this week ...
KQED Celebrates Black History Month
KQED proudly celebrates the diversity of our community by commemorating Black History Month. During February, KQED Public TV 9 and KQED 88.5 FM schedule programs that focus on African American themes and issues.
"Boomtown" History of the San Francisco Bay Area
KQED's "Boomtown" series will seek to identify what is happening in real time in the current boom, and also draw out the causes and possible solutions to the conflicts and pressures between the old and the new.