Sexual Search Terms and Birth Rates Chart (IMAGE) Indiana University Caption The study found a close correlation between peaks in sexual search terms on Google (black line) and spikes in birth rates (shaded upper line in blue), shifted by nine months, in the Northern Hemisphere (upper chart) and Southern Hemisphere (lower chart). The red line marks Christmas week. Credit Image courtesy Ian Wood, Indiana University Usage Restrictions Credit author License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.