2018 tables: Institutions - Earth & environmental sciences - corporate

The 2018 tables are based on Nature Index data from 1 January 2017 to 31 December 2017.

Table criteria

# Institution Share 2016 Share 2017 Count 2017 Change in Adjusted Share 2016-2017*
1 Science Systems and Applications, Inc. (SSAI), United States of America (USA) 6.34 5.65 28 -6.6%
2 NorthWest Research Associates, Inc. (NWRA), United States of America (USA) 1.59 4.98 23 226.8%
3 GATS Inc., United States of America (USA) 2.22 4.58 13 116.2%
4 Schlumberger Limited, United States of America (USA) 0.77 1.92 6 161.4%
5 Jacobs, United States of America (USA) 1.45 1.85 14 33.9%
6 Aerodyne Research, Inc. (ARI), United States of America (USA) 1.91 1.73 14 -5.0%
7 Exxon Mobil Corporation (ExxonMobil), United States of America (USA) 4.59 1.49 5 -66.0%
8 Chevron Corporation, United States of America (USA) 2.12 1.35 8 -33.1%
9 Alphabet Inc., United States of America (USA) 0.47 1.32 4 192.2%
10 Danaher Corporation, United States of America (USA) 0.43 1.17 4 184.8%
11 Atmospheric and Environmental Research, Inc. (AER), United States of America (USA) 3.83 1.14 6 -68.8%
12 ERT, Inc., United States of America (USA) 0.20 1.10 4 480.3%
13 ION Geophysical Corporation, United States of America (USA) 0.25 1.09 3 354.6%
14 I.M. Systems Group, Inc. (IMSG), United States of America (USA) 1.04 1.04 18 4.5%
15 WeatherTiger, LLC, United States of America (USA) 0.75 1.00 1 39.6%
16 Bruker Corporation, United States of America (USA) 0.38 0.98 4 166.3%
17 Geosyntec Consultants, United States of America (USA) 0.08 0.94 5 1,075.3%
18 Trussell Technologies, Inc., United States of America (USA) 0.09 0.90 2 917.4%
19 American Water, United States of America (USA) 0.77 2 N/A
20 Soller Environmental, LLC, United States of America (USA) 0.71 3 N/A
21 Dow Inc., United States of America (USA) 1.20 0.70 3 -38.9%
22 Agilent Technologies, Inc., United States of America (USA) 0.11 0.68 4 543.7%
23 Malin Space Science Systems (MSSS), United States of America (USA) 0.28 0.68 5 151.9%
24 Envirogen Technologies Inc., United States of America (USA) 0.67 1 N/A
25 PerkinElmer, Inc., United States of America (USA) 0.64 3 N/A
26 Hazen and Sawyer, D.P.C., United States of America (USA) 0.17 0.63 2 294.8%
27 Spheryx, Inc., United States of America (USA) 0.63 1 N/A
28 Electric Power Research Institute (EPRI), United States of America (USA) 0.62 2 N/A
29 Ametek, Inc., United States of America (USA) 0.42 0.60 1 50.7%
30 ICF International, Inc., United States of America (USA) 0.13 0.57 1 378.5%
30 Stratton Park Engineering Company (SPEC), United States of America (USA) 0.75 0.57 2 -19.9%
31 Ramboll Environ, Inc., United States of America (USA) 0.56 1 N/A
32 Denali Scientific LLC, United States of America (USA) 0.24 0.53 6 133.5%
33 Earth Networks, Inc., United States of America (USA) 0.10 0.51 3 437.1%
34 Arcadis US, Inc., United States of America (USA) 0.40 0.50 1 30.8%
34 Ford Motor Company, United States of America (USA) 2.00 0.50 1 -73.8%
34 TechnoImaging, LLC, United States of America (USA) 0.50 1 N/A
34 Lahontan GeoScience Inc. (LGS), United States of America (USA) 0.50 1 N/A
34 Lettis Consultants International, Inc. (LCI), United States of America (USA) 0.50 1 N/A
34 California Environmental Associates (CEA), United States of America (USA) 0.50 1 N/A
34 Marathon Oil Corporation, United States of America (USA) 0.50 1 N/A
35 Science and Technology Corporation (STC), United States of America (USA) 0.35 0.41 3 20.9%
36 CDM Smith Inc., United States of America (USA) 0.25 0.40 1 67.5%
36 SUEZ, United States of America (USA) 0.40 0.40 1 4.7%
36 Weston Solutions, Inc., United States of America (USA) 0.40 1 N/A
36 Windward Environmental LLC, United States of America (USA) 0.40 1 N/A
37 Thermo Fisher Scientific Inc., United States of America (USA) 0.39 2 N/A
38 Scientific Aviation, Inc., United States of America (USA) 0.12 0.38 4 242.1%
39 CH2M Hill, Inc., United States of America (USA) 0.17 0.34 2 114.3%
40 Research Planning, Inc., United States of America (USA) 0.25 0.33 1 39.6%
40 LimnoTech, United States of America (USA) 0.33 2 N/A
40 EnChem Engineering, Inc., United States of America (USA) 0.33 1 N/A
40 Vista Clara Inc., United States of America (USA) 0.33 1 N/A
40 Trialomics, LLC, United States of America (USA) 0.33 1 N/A
41 Space Research Corporation, United States of America (USA) 0.33 8 N/A
42 CSRA Inc., United States of America (USA) 0.25 0.32 2 32.6%
43 IsoForensics, Inc., United States of America (USA) 0.29 0.31 1 12.2%
44 Trinnovim, LLC, United States of America (USA) 0.29 2 N/A
44 Remote Sensing Systems (RSS), United States of America (USA) 0.29 2 N/A
44 CSS-Dynamac Corporation, United States of America (USA) 0.29 2 N/A
45 CB&I, United States of America (USA) 0.55 0.28 2 -47.1%
46 Ball Corporation, United States of America (USA) 0.33 0.28 16 -11.8%
47 Badger Technical Services, LLC (BTS), United States of America (USA) 0.26 3 N/A
48 Bear Fight Institute (BFI), United States of America (USA) 0.31 0.25 1 -15.8%
48 AECOM, United States of America (USA) 0.62 0.25 1 -57.7%
48 Jon Remucal, United States of America (USA) 0.25 1 N/A
48 Kennedy/Jenks Consultants, United States of America (USA) 0.25 1 N/A
48 Arctic Slope Regional Corporation (ASRC), United States of America (USA) 0.25 1 N/A
48 Bio-Microbics Inc., United States of America (USA) 0.25 1 N/A
48 Weston Geophysical Corporation, United States of America (USA) 0.25 1 N/A
48 Science Data Processing Inc., United States of America (USA) 0.25 1 N/A
49 Black and Veatch Corporation, United States of America (USA) 0.08 0.24 2 224.0%
50 Materials Development, Inc., United States of America (USA) 0.23 1 N/A

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.