The hard engineering behind grid-scale energy storage
Wind and solar power are only as useful as the grid's ability to store and move them. That is where the energy transition's most complicated work now lies.
Climate Policy
Adapting cities to extreme heat
Urban areas trap warmth. Planners are turning to trees, materials and building codes to keep residents safe.
How carbon markets work, and what determines whether they cut emissions
Putting a price on pollution lets markets find the cheapest ways to reduce it. The design details — caps, allowances, offsets and exemptions — decide whether the theory holds.