It is time policymakers recognize that despite the claims of renewable energy and efficiency hucksters, we do not have the technologies needed to significantly curb greenhouse gas emissions without causing massive economic disruption.

How can we best build U.S. resilience to the impact of global warming?

Geoengineering could be one of the very best ways of hedging against the larger risks and uncertainties that surround climate policy.

Comings and goings in Congress are frequent occurrences,and twenty and thirty year Hill careers are no longer the norm in personal and committee offices.

Gradually lowering greenhouse gas emissions would be worthwhile were all states to join in the effort, but absent such strong, broad-based action, countries should explore other means of limiting harm from climate change.

The American Clean Energy and Security Act of 2009 is an ambitious attempt to meet the very real challenges posed by greenhouse gases.