Wolfram Alpha is pretty good for random factual queries. It will even do computation, so you can ask for the number of dietary calories in a cubic lightyear of cream cheese.
https://www.wolframalpha.com/If you are looking more for proven statistics that get suppressed for political reasons, then the now-defunct hatefact site is what you want. It featured over 700 awkward facts, with citations. Archive as one big page: http://archive.is/LRe05 Archive with 1 page per category: http://hatefacts.subvert.pw/hub.html
