My latest story for The New York Times features Oxford University professor Dieter Helm. We met on Wednesday in Washington, D.C., to discuss Europe’s flawed energy policies and what he considers America’s lucky break with natural gas. The best part of the interview? He’s refreshingly honest and doesn’t mind admitting he’s angry. Helm is the author of “The Carbon Crunch: How we’re getting climate change wrong – and how to fix it.” He told me, “Parts of my book are angry. It was a great way to construct an argument!”