- http://what-if.xkcd.com
- http://blag.xkcd.com
- http://store.xkcd.com/
- http://xkcd.com/how-to/
- https://www.amazon.com/How-Absurd-Scientific-Real-World-Problems/dp/0525537090/
- http://links.penguinrandomhouse.com/type/affiliate/isbn/9780525537090/siteID/8001/retailerid/2/trackingcode/PRH5522E62429
- http://links.penguinrandomhouse.com/type/affiliate/isbn/9780525537090/siteID/8001/retailerid/6/trackingcode/penguinrandom
- https://itunes.apple.com/us/book/how-to/id1451461524?mt=11
- http://threewordphrase.com/
- http://www.smbc-comics.com/
- http://www.qwantz.com
- http://oglaf.com/
- http://www.asofterworld.com
- http://buttersafe.com/
- http://pbfcomics.com/
- http://questionablecontent.net/
- http://www.buttercupfestival.com/
- http://www.mspaintadventures.com/?s=6&p=001901
- http://www.jspowerhour.com/
- https://medium.com/civic-tech-thoughts-from-joshdata/so-you-want-to-reform-democracy-7f3b1ef10597
- https://www.nytimes.com/interactive/2017/climate/what-is-climate-change.html
- https://twitter.com/KHayhoe
- http://creativecommons.org/licenses/by-nc/2.5/
