Airline and Transportation Data in US
Bureau of Transportation Statistics maintains many databases including information about on time status of airlines.
OpenData (USA, SF, NYC, Chicago, St. Paul, Minneapolis, and more)
National, state, and city governments have been working to make their government data more easily accessible for transparency and accountability.
Census runs the Survey on Construction that has a lot of information on new homes constructed in the US. You could also look into the zillow package in R to scrape data from Zillow’s website.
The World Factbook – from the CIA (Central Intelligence Agency)
The field listing in the column at the left lets you select what topic you want information about. The area to the right will list that information for all countries. Pick any fields (topics) that you would like to investigate the relationship between. There is no shortage of ideas here! International level data could also be found at the UN, WHO, World Bank, and IMF.
Consumer Expenditure Survey (individual-level data)
Bureau of Labor Statistics runs the Consumer Expenditure Survey, which provides data on the buying habits of American consumers.
Integrated Public Use Microdata Series (IPUMS)
There is a wealth of data here rom Census data as well as international census data. This is all individual-level data.
CDC Vital Statistics and CDC Wonder
Public-access data on births and deaths in the US with many demographic information.
The National Health and Nutrition Examination Survey (NHANES)
Public-access health data on individuals who participated in the study.
Access to global historical weather and climate data.
DataQuest helps you find facts about California Schools and districts, grades K – 12.
Infoplease.com Family Education Network: World Statistics
General World Statistics, Population Statistics, Social, Economic & Political Statistics. Follow the links in the center of this page the explore what is available.
Infoplease.com Family Education Network: United States Statistics
Contains links to many types of statistics for the United States, as well as links to world statistics, sports statistics, etc. Some of the data presented by state, in easily usable table form are given listed below.
Baseball Almanac – the “Official” Baseball History
Everything you ever wanted to know about baseball. To get data for various years, choose “Year in Review” and then choose any of the years in red (some of the years are 1985 through 1999, except 1989).
National Longitudinal Surveys (Longitudinal)
This set of national surveys was designed to gather information at multiple points in time on the labor market activities and other significant life events of several groups of men and women.
Data sets about Energy and Environmental Impact
Cleanweb initiative have a list of many relevant data sets for energy consumption and the impact on the environment.