The editorial board continues its "A Warming World" series with a piece on energy efficiency:

Energy efficiency is the fastest, safest and cheapest method currently available for cutting carbon emissions. It's also one of the least understood, because it involves a lot more than adding insulation to buildings or installing power-sipping air conditioners. To make really hefty efficiency gains, the U.S. must follow California's lead in restructuring incentives for utilities, and regulatory agencies should do much more to encourage important innovations such as cogeneration plants.

The University of Nebraska's Eric Berger notes that states defend lethal injection procedures, even if they know it causes excruciating pain. Columnist Gregory Rodriguez goes to Wilmington Middle School to see how students are improving their vocabulary during P.E. And the Woodrow Wilson Center's Aaron David Miller says the Annapolis Middle East summit is just the first step to peace.

Readers react to Jonah Goldberg's column saying Ron Paul isn't scary. Pittsburgh's Kris Sanders disagrees: "Wouldn't any candidate who supported the freedom to kill the innocent be truly scary?"