Sperm levels among men in Western countries has more than halved during the past 40 years - and, according to one study, could deplete to zero by 2045.
Richard Wrangham's forthcoming book The Goodness Paradox explores the strange relationship between virtue and violence in human evolution. CURTIS ABRAHAM interviewed Wrangham for The Ecologist
By radically changing the way we acquire our food, the development of agriculture has condemned us to live worse than ever before. Not only that, agriculture has led to the first significant instances of large-scale war, inequality, poverty, crime, famine and human induced climate change and mass extinction.
By Clive W. Dennis (winner of the Ecologist/Coady International Institute 2006 Essay Competition)