**Open hour can be hosted by anyone about anything.** Many are hosted by [organizers](/organizers). The topics of open hour vary from presentations on tools and methods, discussions on environmental issues, to approaches to data-based advocacy. Each call will include time for introductions, discussion, and questions. Open hour may be virtual or face-to-face, and are promoted broadly across the global Public Lab community. **Propose new sessions on the [Talk page](http://pad.publiclab.org/p/openhour).** To learn about other types of events, see [publiclab.org/events](/events) ###May 7, 2014, 7PM EST This first call is dedicated to water contamination. We will use our time together to write descriptions of common water contaminants, with a no-nonsense rundown on what methods might be used to both assess and address the presence of these contaminants. * See the work begun on this page: http://publiclab.org/wiki/common-water-contaminants
* **This call will happen on Skype, please add your Skype name (or a cell phone number) to this doc to be added to the call: https://docs.google.com/document/d/1xVM68fYP5eU5L7ho6mQZI2xza8dbbidbaOe3cd0KVqE/edit** ###May 14, 2014 Water Contaminants topic ###May 21, 2014 Water Contaminants topic ###May 28, 2014 unscheduled ###June 4, 2014 unscheduled