Building contributions (IMAGE) Heidelberg University Caption Left: Spatial distribution of all buildings added to OpenStreetMap since 2008; right: spatial distribution of buildings added through humanitarian mapping efforts using the HOT Tasking Manager. Credit Benjamin Herfort Usage Restrictions This image may be used only in connection with the contents of this press release, and the source of the image must also be cited. 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.