Sand is a critical ingredient for many of the materials that we take for granted: concrete, glass and asphalt. Sand and coarse aggregates form the backbone of the modern world and also, through land reclamation, the ground on which we live. A growing global population increasingly living in cities has led to a spiralling rise in the extraction of sand and aggregates, with serious environmental, political and social consequences.

Is the electric business doomed? That may seem a foolish question when every analysis indicates that global electricity use will continue to increase rapidly in the coming decades. But that depends on what you mean by 'electric business'. Electricity was not originally a business. It might, once again, no longer be.

Transitioning towards healthy diets from sustainable production could provide relief from some of the most pressing environmental and public health challenges Indonesia faces. This paper outlines some of the steps that could help deliver this transformation in Indonesia.  

Supply-side reductions in emissions have dominated thinking to date. An area that has received less attention is that of demand-side, lifestyle, and behavior changes to reduce emissions.