These are some of the resources used by the community for researching.

www.worldometers.info such as for example : www.worldometers.info/world-population/

www.changents.com  is now dead. It was a good resources, and closest "competitor" with this site. I was planning a lot of tie in and usage of the site. Pity.

General search engines.

Common social networking and information sources. Soon integrating some of their shared capabilities.

Talking with people in general.

Possible resources to be evaluated :

www.verbeterdewereld.org

wereldverbeteraars.clubs.nl

www.rhok.org apparently dead now, the site has been unreachable for some time. Pity, as I was planning to make use of the page : wiki.rhok.org/Category:Problem_Definitions, however I found an archived version at web.archive.org. Please donate to and support web.archive.org,  this is a valuable resource for many things.
I have found these related :  rhokbrisbane.org rhok.dk    and here is no activity for a long time : twitter.com/RHoKLondon

problem solving, decision making

https://en.wikipedia.org/wiki/Kepner-Tregoe
http://www.kepner-tregoe.com/
http://www.decision-making-confidence.com/kepner-tregoe-decision-making.html