What are seasons? -- How it all began -- The tilt -- Spring and summer -- Fall and winter -- Wet and dry -- Astronomical versus meteorological -- History, myths, and customs -- History -- Forecasting through times -- Myths and legends -- Customs and festivals -- The moon and the stars -- Seasons and us -- Weather pioneers -- What seasons where? -- Seasonal food -- Climate change -- Seasons in nature -- Spring in nature -- Summer in nature -- Fall in nature -- Winter in nature -- Wet season and dry season -- Migration -- Ocean seasons -- The tropics and the poles -- Mind, body, and soul -- True or false -- Weather moods -- Seasonal activities -- Glossary.