Online interest in sex rises at Christmas, with more births nine months later

It’s often wryly observed that birth rates peak in September, with many studies citing seasonal changes in human biology to explain this post-holiday “baby boom.” But new research from scientists at Indiana University and the Instituto Gulbenkian de Ciência in Portugal finds that spikes in pregnancies are actually rooted in society, not biology. The evidence was discovered in the online interest in sex or “collective unconscious” of web searches and Twitter posts that researchers now use to reveal our hidden desires and motivations. “The rise of the web and social media provides the unprecedented power to analyze changes in people’s collective mood and behavior on a massive scale,” said Luis M. Rocha, a professor in the IU School of Informatics, Computing and Engineering, who co-led the study. “This study is the first ‘planetary-level’ look at human reproduction as it relates […]