Denser cities could be a climate boon – but nimbyism stands in the way

Drawing people into cities could cut emissions and combat housing crises. But even progressives are hard to convince

In San Francisco's Sunset District, rows and rows of pastel-colored, two-storey homes flow from the edge of Golden Gate park into the sand dunes of Ocean Beach. Many houses here have solar panels on their roofs and compost bins at their driveways, flanked by hybrid and electric cars.

Yet here - and all over this city - one major solution to both the housing crisis and the climate crisis has been met with fierce resistance: building more.