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This title argues that the 11-year sunspot cycle has become the third most important natural cycle affecting our lives, after the cycle of day and night and the cycle of seasons. The aim of this book is to describe the phenomenology of this cycle and to discuss the scientific pr…
The cycle of day and night and the cycle of seasons are two familiar natural cycles around which many human activities are organized. But is there a third natural cycle of importance for us humans? On 13 March 1989, six million people in Canada went without electricity for many …