Square dance club Square dance club Square dance clubs are the primary form for organization within the recreational activity of square dancing, and more specifically modern Western square dance. This article's focus is the modern Western square dance club, and it is understood in the context of this article that when the terms "square dance club" or "square dance" are used it refers to the form of square dance called "modern Western square dance". Square dance clubs are primarily, but not exclusively, local in character. A square dance club is only as strong as its members, i.e. individual square dancers. The club's primary
Solar activity and climate irradiation increases with part of twentieth century warming. Three mechanisms are proposed by which solar activity affects climate: Climate models have been unable to reproduce the rapid warming observed in recent decades when they only consider variations in total solar irradiance and volcanic activity. Hegerl "et al." (2007) concluded that greenhouse gas forcing had "very likely" caused most of the observed global warming since the mid-20th century. In making this conclusion, they allowed for the possibility that climate models had been underestimating the effect of solar forcing. Another line of evidence comes from looking at how temperatures at different levels