2019 tables: Institutions - Earth & environmental sciences - corporate

The 2019 tables are based on Nature Index data from 1 January 2018 to 31 December 2018.

Table criteria

# Institution Share 2017 Share 2018 Count 2018 Change in Adjusted Share 2017-2018*
1 Science Systems and Applications, Inc. (SSAI), United States of America (USA) 5.65 7.95 35 28.3%
2 Exxon Mobil Corporation (ExxonMobil), United States of America (USA) 1.49 3.82 13 134.1%
3 Atmospheric and Environmental Research, Inc. (AER), United States of America (USA) 1.14 3.33 9 165.9%
4 GATS Inc., United States of America (USA) 4.58 2.02 10 -59.8%
5 Jacobs, United States of America (USA) 1.85 1.85 14 -8.8%
6 NorthWest Research Associates, Inc. (NWRA), United States of America (USA) 4.98 1.83 20 -66.4%
7 ICF International, Inc., United States of America (USA) 0.57 1.46 3 132.9%
8 Trussell Technologies, Inc., United States of America (USA) 0.90 1.44 2 46.5%
9 Chevron Corporation, United States of America (USA) 1.35 1.29 4 -12.8%
10 Schlumberger Limited, United States of America (USA) 1.92 1.13 3 -46.4%
11 Aerodyne Research, Inc. (ARI), United States of America (USA) 1.73 1.07 10 -43.5%
12 Alphabet Inc., United States of America (USA) 1.32 1.07 5 -25.8%
13 Phillips 66, United States of America (USA) 1.00 1 N/A
13 Space Science and Technology, Inc., United States of America (USA) 1.00 1 N/A
13 Geosyntec Consultants, United States of America (USA) 0.94 1.00 1 -2.5%
14 APTIM, United States of America (USA) 0.17 0.96 3 424.8%
15 CDM Smith Inc., United States of America (USA) 0.40 0.92 4 109.0%
16 Attagene, Inc., United States of America (USA) 0.90 1 N/A
17 Corona Environmental Consulting, LLC, United States of America (USA) 0.08 0.83 1 812.7%
18 Ford Motor Company, United States of America (USA) 0.50 0.82 3 49.7%
19 LimnoTech, United States of America (USA) 0.33 0.75 1 105.4%
20 I.M. Systems Group, Inc. (IMSG), United States of America (USA) 1.04 0.74 12 -35.0%
21 AECOM, United States of America (USA) 0.25 0.70 5 154.6%
22 Dow Inc., United States of America (USA) 0.70 0.67 2 -13.1%
22 Atmospheric and Space Technology Research Associates (ASTRA), LLC, United States of America (USA) 0.67 1 N/A
23 IBM Corporation, United States of America (USA) 0.20 0.58 4 158.3%
24 Pacific Advanced Civil Engineering, Inc. (PACE), United States of America (USA) 0.57 1 N/A
24 Urban Mining Co., United States of America (USA) 0.57 1 N/A
25 Tighe & Bond, Inc., United States of America (USA) 0.50 1 N/A
26 SPECInc (Stratton Park Engineering), United States of America (USA) 0.15 0.43 2 156.2%
27 Microbial Insights Inc., United States of America (USA) 0.43 1 N/A
27 MBio Diagnostics, Inc., United States of America (USA) 0.43 1 N/A
27 PepsiCo, Inc., United States of America (USA) 0.43 1 N/A
28 HDR, Inc., United States of America (USA) 0.11 0.40 1 246.8%
28 Aramco Research Center in Houston Area, United States of America (USA) 0.40 1 N/A
28 Gross-Wen Technologies Inc., United States of America (USA) 0.40 1 N/A
29 Computational Physics, Inc., United States of America (USA) 0.19 0.39 4 85.5%
30 Handix Scientific LLC, United States of America (USA) 0.39 3 N/A
31 Carollo Engineers, Inc., United States of America (USA) 0.06 0.36 2 420.0%
32 CSRA Inc., United States of America (USA) 0.32 0.34 2 -1.2%
33 PerkinElmer, Inc., United States of America (USA) 0.64 0.33 1 -52.7%
33 Soller Environmental, LLC, United States of America (USA) 0.71 0.33 1 -57.1%
33 Idaho Power Company, United States of America (USA) 0.33 1 N/A
33 GSI Environmental Inc. (GSI), United States of America (USA) 0.33 1 N/A
33 The Chemours Company, United States of America (USA) 0.33 2 N/A
33 Riverkeeper, Inc., United States of America (USA) 0.33 1 N/A
33 Weyerhaeuser NR Company, United States of America (USA) 0.33 1 N/A
33 Mission Support and Test Services, LLC, United States of America (USA) 0.33 1 N/A
33 Phase Genomics, Inc., United States of America (USA) 0.33 1 N/A
33 Real Whirlwind, LLC, United States of America (USA) 0.33 1 N/A
33 Access Sensor Technologies, LLC, United States of America (USA) 0.33 1 N/A
33 DJD Consulting, LLC, United States of America (USA) 0.33 1 N/A
34 Thermo Fisher Scientific Inc., United States of America (USA) 0.39 0.32 2 -26.4%
35 Agilent Technologies, Inc., United States of America (USA) 0.68 0.30 2 -59.9%
35 Lowell Digisonde International (LDI), LLC, United States of America (USA) 0.30 1 N/A
36 Bear Fight Institute (BFI), United States of America (USA) 0.25 0.30 2 7.9%
37 Silvestrum Climate Associates, LLC, United States of America (USA) 0.29 1 N/A
38 Berkeley Air Monitoring Group, United States of America (USA) 0.27 2 N/A
39 E. I. du Pont de Nemours and Company (DuPont), United States of America (USA) 0.14 0.25 3 62.4%
40 DowDuPont Inc., United States of America (USA) 0.25 2 N/A
41 Santa Clara Valley Water District, United States of America (USA) 0.17 0.25 1 36.9%
41 Leco Corporation, United States of America (USA) 0.25 1 N/A
41 LGL Ecological Research Associates, Inc., United States of America (USA) 0.25 1 N/A
41 Earth System Sciences, LLC, United States of America (USA) 0.25 1 N/A
41 Apple Inc., United States of America (USA) 0.25 1 N/A
41 Dayspring Group, LLC, United States of America (USA) 0.25 1 N/A
41 The MathWorks, Inc., United States of America (USA) 0.25 1 N/A
41 Science and Society Resources LLC, United States of America (USA) 0.25 1 N/A
41 Joint Resources Company, United States of America (USA) 0.25 1 N/A
41 Salt River Project (SRP), United States of America (USA) 0.25 1 N/A
41 Environmental Model and Data Optima Inc. (EMDO), United States of America (USA) 0.25 1 N/A
41 Covenant Testing Technologies, LLC, United States of America (USA) 0.25 1 N/A
41 LTI Optics, LLC, United States of America (USA) 0.25 1 N/A
41 Robinhood Financial LLC, United States of America (USA) 0.25 1 N/A
41 Ormat Technologies, Inc., United States of America (USA) 0.25 1 N/A
42 Denali Scientific LLC, United States of America (USA) 0.53 0.24 5 -58.1%
43 CH2M Hill, Inc., United States of America (USA) 0.34 0.24 2 -36.3%
44 Remote Sensing Systems (RSS), United States of America (USA) 0.29 0.22 2 -31.2%
45 Space Research Corporation, United States of America (USA) 0.33 0.21 6 -42.3%
46 Scientific Aviation, Inc., United States of America (USA) 0.38 0.20 1 -52.1%
46 Ametek, Inc., United States of America (USA) 0.60 0.20 1 -69.6%
46 Danaher Corporation, United States of America (USA) 1.17 0.20 1 -84.4%
46 Metron, Inc., United States of America (USA) 0.20 1 N/A
46 Panoramic Environmental Consulting, LLC, United States of America (USA) 0.20 1 N/A
46 Municipal Testing Laboratory, Inc., United States of America (USA) 0.20 1 N/A
47 Earth Networks, Inc., United States of America (USA) 0.51 0.20 2 -65.1%
48 EarthShift LLC, United States of America (USA) 0.18 2 N/A
49 Ramboll Environ, Inc., United States of America (USA) 0.56 0.18 1 -70.1%
49 Stratton Park Engineering Company (SPEC), United States of America (USA) 0.57 0.18 1 -71.0%
49 Leidos Holdings, Inc., United States of America (USA) 0.18 2 N/A
50 Atmospheric Research and Analysis, Inc., United States of America (USA) 0.20 0.17 2 -21.4%

Footnote

Each year, the Nature Index publishes tables based on counts of high-quality research outputs in the previous calendar year. Users please note:

  1. The data behind the tables are based on a relatively small proportion of total research papers, they cover the natural sciences only and outputs are non-normalized (that is, they don’t reflect the size of the country or institution, or its overall research output).
  2. The Nature Index is one indicator of institutional research performance. The metrics of Count and Share used to order Nature Index listings are based on an institution’s or country’s publication output in 82 natural-science journals, selected on reputation by an independent panel of leading scientists in their fields.
  3. Nature Index recognizes that many other factors must be taken into account when considering research quality and institutional performance; Nature Index metrics alone should not be used to assess institutions or individuals.
  4. Nature Index data and methods are transparent and available under a creative commons licence at natureindex.com.

The Nature Index database undergoes regular updating, corrections, adjustment of institutional hierarchies, and removal of retracted papers and thus the live website can differ from the frozen annual tables.

*The change in adjusted Share accounts for the small annual variation in the total number of articles in Nature Index journals. Share values have been adjusted to 2020 levels to calculate the percentage change. For more information on the adjustment, please see the Adjusted metric explainer.