The Editors The state's incendiary new immigration law has created a police state.

• John Nichols: Grijalva Fights Arizona Measure
• Dave Zirin: Diamondback Protests Take Off

Ari Melber A new study finds that liberal blogs promote deeper participation than conservative blogs do--and are more vocal in asking readers to vote, donate and organize.

• The Sociology of Political Blogs: An Interview with Yochai Benkler

Naomi Klein At Bolivia's climate summit, the prevailing sentiment was rage against helplessness.

John Nichols Arizona Governor Jan Brewer on Friday signed harsh anti-immigrant legislation that even conservatives say will do damage to Arizona's economic recovery and undermine public safety.

Heather Rogers Carbon offsets sound good for the environment and for your conscience--but the devil is in the details.

• Slide Show: The Nation Celebrates Earth Day