Michael Dudley

Scientists are taking seriously proposals to artificially and massively change the Earth's ecosystems -- to "geoengineer" the planet -- to put the brakes on climate change.

With high-profile private-sector clients scaling back prestige projects in the face of the economic downturn, architectural firms are looking instead to institutional clients and retrofitting existing buildings.

A disturbing new report on sea-level rise projections for California warns that the state must start planning now for the anticipated flooding of its coastline, which could wipe out over $100 billion worth of built infrastructure.

The downturn in the economy has led the owners of the Ground Zero site to put off for decades construction of two of the three planned towers.

Green Living magazine gives kudos to Canada's leading cities in terms of energy, water, density and bike-friendliness.