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Explains the occurrence of biological clocks, which, for example, tell birds when and where to migrate, plants when to unfurl their leaves, and which affect human beings in various physical and emotional ways.
Posted August 11, 2012
The book is most interesting. My grandkids are enjoying the stories,good learning. I as very disappointed in the delivery service. I have a B&N membership which is to provide fast delivery, 2 to 3 days. This book left Jamesburg,NJ on July 28th and as passed on to the US Postal Service special delivery service. It never arrived until August 11th. Living in the Newton,NJ area, I could have biked or even walked it in less time. This has happened to me several times -------- not happy at all.