Our cities have become monuments of concrete and steel. Concrete and steel are durable, but they’re also immense sources of greenhouse gases and require large amounts of energy to prduce. The building ...

When the first skyscraper was built in Chicago in 1885 — a modest ten storeys — people were afraid to walk under the steel-framed building, fearing it would collapse. Today, as towers made of wood go ...

At the University of Toronto, just across the street from the football stadium, workers are putting up a 14-story building with space for classrooms and faculty offices. What’s unusual is how they’re ...