Jennifer Marohasy: Greenland's Ice Follows Dramatic Fall in Carbon Dioxide Levels?

According to a recent paper** published in the journal Nature, only a dramatic fall in atmospheric carbon dioxide levels are able to explain the transition from the mostly ice-free Greenland of three million years ago, to the ice-covered Greenland of today.

I am not convinced, but anyway, the paper begs the question, why did the purported elevated atmospheric carbon dioxide concentrations fall to levels similar to the pre-industrial era?

NC Media Watch: DANGER: Stupid Social Engineers at Work!

Today California's lawmakers approved a first-in-the-nation bill that would require cities and counties to account for the effects of global warming in planning local housing developments. Their goal is to meet the emission mandates spelled out in AB-32 a wide ranging greenhouse gas reduction law passed two years ago. It requires local governments to submit regional development plans to state air regulators for approval. The only way they can meet AB-32 greenhouse gas emission requirements is to reduce automobile use.