United States of America (USA)

1 July 2020 - 30 June 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 July 2020 - 30 June 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
28617 20219.18

Outputs by subject (FC)

Subject Count Share
Life Sciences 13196 9751.26
Chemistry 6710 4883.35
Physical Sciences 7991 5147.14
Earth & Environmental Sciences 4431 2888.63

1 July 2020 - 30 June 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 (4147.06)
    1946.37
    2200.69
  2. 1159.12
    851.54
  3. Germany (1921.98)
    1075.72
    846.26
  4. Canada (1228.29)
    781.37
    446.92
  5. France (1072.38)
    662.45
    409.93
  6. Japan (1023.66)
    637.79
    385.87
  7. Switzerland (723.29)
    429.93
    293.36
  8. Australia (722.10)
    424.66
    297.43
  9. South Korea (663.92)
    396.11
    267.82
  10. Italy (611.41)
    373.90
    237.51

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 2604 900.08
2. Stanford University 1586 596.16
3. Massachusetts Institute of Technology (MIT) 1801 524.14
4. National Institutes of Health (NIH) 1068 410.52
5. University of California, Berkeley (UC Berkeley) 1241 385.22
6. University of California, Los Angeles (UCLA) 1095 363.02
7. University of Michigan (U-M) 986 357.58
8. Yale University 953 336.14
9. University of California, San Diego (UC San Diego) 996 335.53
10. Northwestern University (NU) 737 318.52

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