A six-percent upfront investment reduced energy consumption by 19% — and carbon emissions by 34% — in a pair of 100-year-old brick buildings. Add solar panels and those numbers drop to 39% and 65%.These are among the findings of an ongoing experiment conducted by students, faculty and staff... View full entry

Johannesburg is a modern global city, the second largest in Africa, its metropolitan area home to nearly 8 million people. Yet the legacy of apartheid has left it a city of spatial segregation — a city of walls, of racially divided townships and populations pushed to the peripheries.Last summer... View full entry