Treating 'run-of-the-river' hydro, wind and solar electricity as consumable commodities is fundamentally inconsistent, and has important implications for policy and investment, argues Walt Patterson.  

As renewables become a large share of the global energy mix, greater electricity system flexibility will be critical and will originate from the small scale, write Daniel Quiggin and Antony Froggatt.

The world is undergoing a dramatic electricity transition, and the global struggle for power over this transformed electric system is set to profoundly shape our future, argues Walt Patterson.

The food system is locked in a vicious circle of increasing production, environmental degradation and rising public health costs. Yields have plateaued but demand is rising while diet is becoming progressively more unhealthy and unsustainable. Rob Bailey and Bernice Lee call on the need for a clear alternative vision to break this vicious circle.

Sustainable and healthy diets could bring widespread environmental and public health benefits. Laura Wellesley outlines the strategies and interventions required to sustainably meet the nutritional needs of a growing global population.

Agriculture must be radically transformed for environmental, food and nutrition security to be reconciled. Richard King outlines some of the existing and emerging opportunities to shift production towards more sustainable and equitable outcomes.