ThoughtsHereAndThere

General Science:

Economics:

http://www.daviddfriedman.com/

http://econlog.econlib.org/

http://freakonomics.com/

http://marginalrevolution.com/

Psychology/Psychiatry:

http://www.badscience.net/

http://slatestarcodex.com

https://thelastpsychiatrist.com/

http://1boringoldman.com

Mathematics:

betterexplained.com

web.evanchen.cc

jeremykun.com/

mathforum.org/dr.math/

http://www.mathpages.com/home/

terrytao.wordpress.com/

xorshammer.com/

3brown1blue https://www.youtube.com/channel/UCYO_jab_esuFRV4b17AJtAw

Sociological Commentary:

http://nostalgebraist.tumblr.com

http://www.overcomingbias.com (Really in a category all on its own)

https://samzdat.com/

Self-Education:

https://artofproblemsolving.com/

https://brilliant.org/

https://www.coursera.org/

https://www.edx.org/

https://www.khanacademy.org/

Statistical Politics:

http://election.princeton.edu/

https://fivethirtyeight.com/

Computer Science:

http://blog.computationalcomplexity.org/

https://www.scottaaronson.com/blog/

World Building/Programming:

https://www.codingame.com/start

People Here And There:

http://dilbertblog.typepad.com/

http://www.paulgraham.com/articles.html

https://stevenpinker.com/

Wikis and Collabs of Thought:

lesswrong.com

https://rationalwiki.org/wiki/Main_Page

News Sites:

https://www.theatlantic.com/

https://www.c-span.org/

https://www.scientificamerican.com/

Interesting Blogs

https://maggiemcneill.wordpress.com/

https://knowingless.com/ (Selling the body, the above two.)

http://scattered-thoughts.net/ (Book Reviews)

https://motls.blogspot.com/

https://www.math.columbia.edu/~woit/wordpress/ (String theory wars, the last two)

https://www.edge.org (Collection of great modern essays)

https://www.huxley.net/ (Ever read Brave new World?)

https://sillyolme.wordpress.com (Interesting notes on Transgender topics)

https://www.gwern.net (In depth analysis on lots of topics)

https://bayesianbodybuilding.com/ (Ah, good ol bodybuilding)

Comics

https://what-if.xkcd.com/

http://existentialcomics.com/comic/1

https://www.smbc-comics.com/

Random Sillies

https://www.deviantart.com/

http://www.scp-wiki.net

http://cuteoverload.com/

Tier Zoo

https://www.youtube.com/channel/UCHsRtomD4twRf5WVHHk-cMw

http://tvtropes.org/

http://maddox.xmission.com/

https://textfiles.com/

https://www.newgrounds.com/