Wonder of wonders, Paul Krugman of the New York Times is optimistic about Copenhagen. What’s more, he calls cutting greenhouse gases (GHGs) both affordable and essential. Reducing GHGs may even help the economy, so there’s no reason to wait. Cap and trade systems have worked before; they can again.

CITY TECH BLOG
The Impact of the Paris Climate Change Agreement in the United States
The United States, under the Obama administration, joined the Paris Agreement in 2015 and committed to reducing greenhouse gas emissions by 26-28% below 2005 levels by 2025. However, in June 2017, the Trump administration announced its intention to withdraw from the agreement (Shear). In April 2021, President Joe