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The battle in Colorado over renewable portfolio standards is a key front in the national climate debate.
Amid the national stalemate, a golden age of local innovation has begun.
Sustainability should guide America's strategy against Islamic extremism.
Should the GOP resist not only illegal but also legal immigration?
Can any Republican unify the party in the 2016 primaries?
Each party's coalition is now defined as much by weakness as strength.
Washington needs to fix the budget's generational imbalance.