Typhoon Haiyan: Satellite images help aid effort
15 November 2013 Last updated at 19:05 GMT
Satellite images of the Philippines before and after the arrival of Typhoon Haiyan are being used to help the aid effort.
The Tomnod website asks users to identify damaged roads, bridges and buildings and this information is then passed on to aid workers and army personnel.
Emily Maitlis reports for Newsnight.