[LINK] It's in the stars

[rfmcdonald]

Over at A Voyage to Arcturus, Jay Manifold takes note of the recent warming of Mars' climate and argues that the Sun, not greenhouse gas emissions, is responsible for global warming on Earth. While I think that the case is overstated--anthropogenic production of greenhouse gases clearly has a role--the idea that the Sun might be putting out more energy should be considered, if only because it will make the task of reversing global warming all the more difficult.