New Geo-Wiki Global Built-up Surface Validation Campaign Launches 23 Sep 2020

We will aim to validate 50K points at least 5 times during the campaign, which will launch on 23rd September 2020. Put this date in your diary and join our campaign, with prizes and co-authorship to be won for participation.

PRIZES

• Top 11 contributors will earn an Amazon voucher (valued from 175 to 500 Euros) AND co-authorship on a peer-reviewed scientific journal paper summarizing and making openly available the information collected.
• Contributors ranking between 12 and 25 on the leaderboard will be offered a choice of an Amazon voucher of 100 to 150 Euros, OR, alternatively, co-authorship on a scientific paper.
• Contributors ranking between 26 and 30 on the leaderboard will be offered an Amazon voucher ranging between 50 to 75 Euros.

To join our campaign, go to the Geo-Wiki website                (https://www.geo-wiki.org) and click on Launch or click here to go directly to the login page.