The headline "Cloud formation may be linked to cosmic rays" may not sound like much, but it is actually yet another blow to the standard model of anthropocentric global warming.
One of the problems with computer climates models is modeling clouds, which provide negative feedback. As the air heats up, the theory goes, more clouds form, which raises the Earth's albedo (a measure of how much light is reflected) and reduces heat absorption. The CLOUD experiment, which has been confirmed to have positive results, verifies that cosmic rays also cause clouds. Cosmic ray flux is inverse to solar flux, so when solar flux drops, cloud formation rises, and vice versa. This has implications for climate models, and hence for AGW theories.
For "settled science", there sure is a lot of new science coming out. Before we spend billions of dollars on climate change mitigation, it's pretty important that we understand our climate.