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Data source: Environmental Protection Agency
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Air pollution in Greeley, Colorado correlates with...

VariableCorrelationYearsSys. Score
Liquefied petroleum gas used in Guyanar=0.5942yrs180
Liquefied petroleum gas used in Netherlands Antillesr=0.5942yrs180
Popularity of the first name Mindyr=0.643yrs162
Popularity of the first name Joyr=0.5943yrs161
Total likes of 'Be Smart' science YouTube videosr=0.7211yrs161
Popularity of the first name Bethr=0.5843yrs160
Number of edits to the Wikipedia article for data dredgingr=0.6320yrs155
Average number of milk cows in the United Statesr=0.4843yrs154
Average length of Computerphile YouTube videosr=0.6711yrs154
Petroluem consumption in Somaliar=0.5442yrs152
The average number of likes on 'Be Smart' science YouTube videosr=0.6611yrs152
Google searches for 'Titanic'r=0.7216yrs142
Number of edits to the Wikipedia article for Availability heuristicr=0.5220yrs138
Number of edits to the Wikipedia article for Nikola Teslar=0.4622yrs132
Popularity of the 'McKayla Maroney' memer=0.6116yrs131
Popularity of the first name Janar=0.5843yrs130
Google searches for 'titanic'r=0.6120yrs129
Popularity of the 'call me maybe' memer=0.6212yrs128
West Nile Virus Casesr=0.5821yrs126
Popularity of the 'gangnam style' memer=0.5812yrs122
Kerosene used in Cabo Verder=0.5342yrs121
Difference in score of Steinfeld Cup Final teamsr=0.5720yrs121
Popularity of the first name Heidir=0.5743yrs118
Russia men's national volleyball team placement in FIVB Volleyball World Leaguer=0.5124yrs114
Petroluem consumption in Albaniar=0.5242yrs110
Total likes of 3Blue1Brown YouTube videosr=0.669yrs110
Global count of operating nuclear power plantsr=-0.5543yrs109
Popularity of the first name Mistyr=0.5743yrs108
Master's degrees awarded in Educationr=0.6610yrs108
Average temperature in Torontor=0.66yrs104
Kerosene used in Portugalr=0.5243yrs100
Popularity of the first name Dawnr=0.5743yrs98
Age of American Idol Winnerr=0.4913yrs98
The number of movies Tom Hardy appeared inr=0.4921yrs98
US production of cream productsr=0.567yrs97
US dairy skim solids used to produce cream productsr=0.577yrs97
Google searches for 'Gangnam Style'r=0.512yrs94
Kerosene used in U.S. Pacific Islandsr=0.5242yrs90
Freezing temperatures in Berlinr=0.4711yrs89
Popularity of the first name Tammyr=0.5743yrs88
How 'hip and with it' 'Be Smart' science YouTube video titles arer=0.7611yrs87
The number of phlebotomists in Colorador=-0.7811yrs86
Bachelor's degrees awarded in Legal professionsr=0.5710yrs84
Associates degrees awarded in consumer sciencesr=0.5711yrs84
Worldwide Harry Potter Movies Revenuer=-0.7211yrs80
xkcd comics published about star warsr=-0.5917yrs78
Popularity of the first name Latoyar=0.5743yrs78
Kerosene used in Trinidad and Tobagor=0.5142yrs78
Total likes of Numberphile YouTube videosr=0.5413yrs76
xkcd comics published about programmingr=-0.5117yrs70
Popularity of the 'willy wonka' memer=0.4618yrs70
Bloomberg Money Stuff articles about bitcoinr=0.4810yrs68
The distance between Uranus and the Sunr=-0.4544yrs66
Freezing temperatures in Torontor=-0.736yrs66
The number of movies Sam Rockwell appeared inr=-0.4834yrs66
Popularity of the first name Tracyr=0.5643yrs66
Total comments on Numberphile YouTube videosr=0.5413yrs66
Popularity of the first name Christyr=0.5643yrs56
The number of MRI technicians in Colorador=-0.5711yrs54
xkcd comics published about pop culturer=-0.4517yrs54
Patents granted to Googler=-0.5311yrs50
Petroluem consumption in Hungaryr=0.4843yrs50
The average number of likes on Numberphile YouTube videosr=0.513yrs50
Popularity of the first name Kristyr=0.5643yrs46
Master's degrees awarded in Library sciencer=0.510yrs44
Google searches for 'what color should I paint my house'r=-0.5520yrs42
Petroluem consumption in Bulgariar=0.4842yrs38
Average number of comments on Numberphile YouTube videosr=0.4913yrs38
Popularity of the first name Jillr=0.5643yrs36
Associates degrees awarded in Educationr=0.4811yrs30
Average temperature in Berlinr=-0.611yrs28
Kerosene used in Canadar=0.4743yrs28
How geeky 'Be Smart' science YouTube video titles arer=0.711yrs28
Popularity of the first name Betsyr=0.5643yrs26
Petroluem consumption in Liberiar=0.4842yrs18
Average length of Casually Explained YouTube videosr=0.519yrs18
Rain in Sydneyr=-0.5711yrs15
Google searches for 'Brexit'r=-0.558yrs11
Gasoline pumped in Senegalr=0.4842yrs8
Total comments on Vihart's YouTube videosr=0.4615yrs6
Kerosene used in Boliviar=0.4742yrs-3
Popularity of the first name Lorir=0.5643yrs-4
How clickbait-y Matt Parker's YouTube video titles arer=0.6713yrs-4
Popularity of the first name Jodyr=0.5643yrs-14
Kerosene used in Turkiyer=0.4643yrs-14
How provocative MinuteEarth YouTube video titles arer=0.6411yrs-21
Popularity of the first name Tonyar=0.5643yrs-24
Kerosene used in Mexicor=0.4740yrs-25
Popularity of the first name Sherryr=0.5643yrs-34
Kerosene used in Norwayr=0.4543yrs-35
The average number of likes on AsapSCIENCE YouTube videosr=-0.7112yrs-35
Popularity of the first name Jasonr=0.5543yrs-45
How 'hip and with it' Extra History YouTube video titles arer=0.612yrs-46
Popularity of the first name Shaunr=0.5543yrs-55
How geeky Matt Parker's YouTube video titles arer=0.5913yrs-56
Nuclear power generation in Spainr=-0.5142yrs-64
How nerdy MrBeast's YouTube video titles arer=0.5912yrs-68
Nuclear power generation in Taiwanr=-0.5142yrs-74
How clickbait-y PBS Space Time YouTube video titles arer=0.659yrs-82
Nuclear power generation in Finlandr=-0.4942yrs-86
Total likes of AsapSCIENCE YouTube videosr=-0.5812yrs-98


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You caught me! While it would be intuitive to sort only by "correlation," I have a big, weird database. If I sort only by correlation, often all the top results are from some one or two very large datasets (like the weather or labor statistics), and it overwhelms the page.

I can't show you *all* the correlations, because my database would get too large and this page would take a very long time to load. Instead I opt to show you a subset, and I sort them by a magic system score. It starts with the correlation, but penalizes variables that repeat from the same dataset. (It also gives a bonus to variables I happen to find interesting.)
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