The sludge report

In the era of coalition, the political tie is becoming more and more muddy coloured, says Charlie Porter

Refined dining

Shaped in an age of scarcity, our appetite for unhealthy foods now torments us. But there is hope, writes Stephen Cave

A bolder approach to city regions

Two things are needed for genuine devolution: local acceptance of a structure that will work and willingness by the centre to concede authority, writes Brian Groom

Notebook

The big squeeze

As house sizes diminish, architects are exploring clever ways to get more from less through space-saving design

The Quest

Daniel Yergin’s guide to the essentials of energy in the 21st century is another triumph