Newswise — With the balance of the world's population tipping toward urban life, a special report in the June issue of IEEE Spectrum takes a look at how five megacities are coping with sustainability, transportation, electric power, natural disasters, and crime. Editors explored Manhattan, Mumbai, Sao Paulo, Shanghai, and Tokyo for technological solutions.

"Megacities by the Numbers" by Samuel K. Moore and Alan Gardner Wealth, power, Internet access, pollution--vital statistics, graphically displayed.

"How To Build a Green City" by Steven Cherry Dongtan, near Shanghai, has visions of sustainability.

"How To Measure a City's Metabolism" by Samuel K. Moore What goes in must come out; London provides an example.

"How To Keep 18 Million People Moving" by Erico Guizzo Sao Paulo is putting them on buses to speed daily commutes.

"How To See the Unseen City" by Sandra Upson If it weren't for infrastructure, life on the surface would be very hard indeed.

"How To Blackout-Proof a City" by Harry Goldstein Mumbai's had no blackouts to date, but that could change this summer.

"Life in the Megacity" (a photo essay)

"How To Master a Seismic Disaster" by Jean Kumagai In Tokyo, early warnings could save property--and lives.

"How To Build a Mile-High Skyscraper" by Willie D. Jones Even the elevators can step aside inside these giants.

"How To Fight Crime in Real Time" by William Sweet and Stephen Cass New York has computerized the war on crime, and become more livable in the process.

"How Not To Make a Megacity" by Harry Goldstein Lagos is a sad contrast to higher-tech cities.

"How To Design a Perfect City" by Stephen Cass Start with Paolo Soleri as your designer.