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2 results

The Infertility Trap
  • Why Life Choices Impact your Fertility and Why We Must Act Now
  • R. John Aitken
  • Published online:
    05 May 2022
    Print publication:
    05 May 2022
  • A potential crisis in human fertility is brewing. As societies become more affluent, they experience changes that have a dramatic impact on reproduction. As average family sizes fall, the selection pressure for high-fertility genes decreases; exacerbated by the IVF industry which allows infertility-linked genes to pass into the next generation. Male fertility rates are low, for many reasons including genetics and exposure to environmental toxins. So, a perfect storm of factors is contriving to drive fertility rates down at unprecedented rates. If we do not recognize the reality of our situation and react accordingly, an uncontrollable decline in population numbers is likely, which we'll be unable to reverse. This book will address, in a unique and multi-faceted way, how the consequences of modern life affects fertility, so that we can consider behavioural, social, medical and environmental changes which could reduce the severity of what is about to come.

  • Human settlement of Easter Island – a competing hypothesis

  • Anthony Cole, John Flenley
  • Journal:
    Earth and Environmental Science Transactions of The Royal Society of Edinburgh / Volume 98 / Issue 1 / March 2007
    Published online by Cambridge University Press:
    01 March 2007, pp. 101-116
    Print publication:
    March 2007

  • This paper draws on epistemology, theory, published data, hypothesis testing and synthesis to explore the predictive and explanatory power of a far-from-equilibrium interpretation of the history of human settlement on Rapa Nui. Our interpretation of the last 1500 years of human settlement on Rapa Nui provides an important competing hypothesis by which to test the explanatory power of earlier equilibrium interpretations of this history. Our evaluation of this competing hypothesis suggests that it provides, overall, a more satisfactory theory that has interesting implications for the goal of sustaining human civilisation.