A Filipino woman collects subsidized rice at a market in Quezon City, Manila. High prices have hit the urban poor, many of whom spend a large proportion...

The International Energy Agency (IEA) estimates that renewable energy sources account for about 13% of the world’s total primary energy supply. Nearly 80% of these renewables are in the form of combustible biomass—mostly wood, charcoal, crop residues, or other wastes burned for cooking, heating, and other activities in the developing world. Now, high oil prices and...