Frank and Carlos were guest editors for the Earthzine’s Crowdsourcing theme which has been just published (4^th quarter 2014). We finally got 6 short, dissemination-level articles targeted the general public. Below is the list of articles and their contributors. We seize this opportunity to thank all of them and especially Earthzine.org staff (Jeff, Elise, and Paul) for their dedication and help to make the edition of this theme really easy.

• A Proposal for Climate Change Adaptation at the Local Level in Costa Rica, by Sergio A. Molina
• Counting on Volunteers: Audubon Celebrates its 115th Annual Christmas Bird Count, by Elise Mulder
• Calling Inquiring Minds: Citizen Science Association Hosts 2015 Conference, by Elise Mulder
• Good Enough? Nichesourcing in Data Quality Assessment, by Francisco J Lopez-Pellicer and Jesus Barrera
• Citizens Observatories: Improving Socio-Economic Relations in the Context of Odor Nuisances, by Philippe Ledent and Ulrich Uhrner
• Putting the ‘Justice’ in GIS: Supporting Communities using EPA Citizen Science Tools, by Laura Steward