United States of America (USA)

1 May 2020 - 1 April 2021

Subject/journal group: All

The table to the right includes counts of all research outputs for United States of America (USA) published between 1 May 2020 - 1 April 2021 which are tracked by the Nature Index.

Hover over the donut graph to view the FC output for each subject. Below, the same research outputs are grouped by subject. Click on the subject to drill-down into a list of articles organized by journal, and then by title.

Note: Articles may be assigned to more than one subject area.

Count Share
29287 20703.22

Outputs by subject (FC)

Subject Count Share
Life Sciences 13285 9859.15
Chemistry 6924 5028.74
Physical Sciences 8518 5482.11
Earth & Environmental Sciences 4409 2889.22

1 May 2020 - 1 April 2021

View the connected world of international research collaboration. Visualize collaborations by subject or region.

Collaborations between countries

Percentage of collaboration by Share

Hover over the graph to view the percentage of collaboration.

Top 10 collaborators by Share

  • United States of America (USA)
  1. China (4298.93)
    2033.20
    2265.73
  2. 1175.43
    878.10
  3. Germany (1962.64)
    1103.97
    858.67
  4. Canada (1235.29)
    787.75
    447.54
  5. France (1109.76)
    681.05
    428.72
  6. Japan (1026.23)
    641.54
    384.69
  7. Australia (741.92)
    446.12
    295.80
  8. Switzerland (712.84)
    421.11
    291.73
  9. South Korea (694.17)
    414.03
    280.14
  10. Italy (630.15)
    387.05
    243.10

Collaboration is determined by the combined fractional count (Share) of United States of America (USA) and the collaborating country.

Top 10 institutions from United States of America (USA)

Institution Count Share
1. Harvard University 2700 958.78
2. Stanford University 1672 621.57
3. Massachusetts Institute of Technology (MIT) 1874 552.12
4. National Institutes of Health (NIH) 1107 424.85
5. University of California, Berkeley (UC Berkeley) 1309 400.15
6. University of Michigan (U-M) 1022 362.68
7. Yale University 1020 359.80
8. University of California, Los Angeles (UCLA) 1109 350.75
9. University of California, San Diego (UC San Diego) 1012 337.63
10. Columbia University in the City of New York (CU) 1031 324.66

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