| Sahajpal, Ritvik | University of Maryland | 
| Sahariah, Dhrubajyoti | Gauhati University | 
| Sailor, David | Arizona State University | 
| Saksena, Sumeet | University of Hawaii | 
| Saladyga, Tom | West Virginia University | 
| Salinas-Melgoza, Miguel A. | University of Twente | 
| Salo, Jessica | Colorado State University | 
| Sanchirico, James | University of California, Davis | 
| Sangha, Kamaljit K. | Charles Darwin University | 
| Santos, Maria | University of California - Davis | 
| Sapinski, Jean Philippe | University of Victoria | 
| Sarjoughian, Hessam | Arizona State University | 
| Sattler, Meredith | California Polytechnic State University, San Luis Obispo | 
| Schindler, Daniel | University of Washington | 
| Schlenker, Wolfram | Columbia University | 
| Schlosser, Peter |  | 
| Schlueter, Maja | Stockholdm Resilience Centre | 
| Schmitt Olabisi, Laura | Michigan State University | 
| Schmitt-Harsh, Mikaela | Carleton College | 
| Schneider, Laura | Rutgers University | 
| Schnier, Kurt | Georgia State University Research Foundation, Inc. | 
| Schoof, Justin | Southern Illinois University | 
| Schuldenrein, Joseph | Geoarcheology Research Associates | 
| Schulte Moore, Lisa | Iowa State University | 
| Schweizer, Vanessa | Carnegie Mellon University | 
| Scott, Christopher | University of Arizona | 
| Scull, Peter | Colgate University | 
| Scullion, Jason | University of Washington | 
| Scyphers, Steven | Northeastern University | 
| Secchi, Silvia | Southern Illinois University | 
| Sedano, Fernando | University of Maryland | 
| Seekell, David | University of Virginia | 
| Seijo, Francisco | Middlebury College C.V. Starr School in Spain | 
| Selfa, Theresa | State University of New York | 
| Selin, Noelle | Massachusetts Institute of Technology | 
| Selvan, M. Tamil | Jawaharlal Nehru University | 
| Semenza, Jan | Portland State University | 
| Setiawan, Yudi | University of Tsukuba, Japan | 
| Seto, Katherine | University of California-Berkeley | 
| Seyoum, Mengistu | Swedish Institute of Agricultural and Environmental Engineering | 
| Shaffer, L. Jen | University of Maryland-College Park | 
| Shank, Nancy C. | University of Nebraska | 
| Shapiro, Elizabeth | Duke University | 
| Sharma, Arpita | Central Institute of Fisheries Education | 
| Shashidharan, Nita | Ashoka Trust for Research in Ecology and the Environment | 
| Shearman, R. Kipp | Oregon State University | 
| Sheppard, Jacob | University of Washington | 
| Sher, Anna | University of Denver | 
| Sherwood, Graham | Gulf of Maine Research Institute | 
| Sheshukov, Aleksey | Kansas State University | 
| Shockley, Johnnie | U.S. Army Corps of Engineers/University of Nebraska | 
| Shoemaker, Douglas | University of North Carolina - Charlotte | 
| Short, Anne | Boston University | 
| Shoyama, Kikuko | National Institute for Environmental Studies | 
| Shrestha, Anil Kumar | Wageningen University | 
| Shrestha, Binoj Kumar | ISER-Nepal | 
| Shrestha, Him Lal | Kathmandu University | 
| Shrestha, Milan | University of Georgia | 
| Shrestha, Rupesh | Boise State University | 
| Shugart, Herman | University of Virginia Main Campus | 
| Siegel, David | University of California-Santa Barbara | 
| Sietz, Diana | Potsdam Institute for Climate Impact Research (PIK), Germany | 
| Sievanen, Leila | Brown University | 
| Silbernagel, Janet | University of Wisconsin-Madison | 
| Silva, Julie | University of Maryland | 
| Silvius, Kirsten | Gordon and Betty Moore Foundation | 
| Simane, Belay | Addis Ababa University | 
| Simon, Carl P. | University of Michigan | 
| Simons-Legaard, Erin | University of Maine | 
| Sims, Charles | Utah State University | 
| Singh, Chandni | Indian Institute for Human Settlements | 
| Singh, Kunwar | University of North Carolina | 
| Singh, Shikha | Michigan State University | 
| Singha, Kamini | Colorado School of Mines | 
| Sivapalen, Murugesu | University of Illinois at Urbana-Champaign | 
| Slater, Lee | Rutgers University | 
| Slottke, Don | Schlumberger | 
| Slowey, Gabriella | York University | 
| Smart, Lindsey S. | North Carolina State University | 
| Smith, Andrew | Arizona State University | 
| Smith, Hillary | University of North Carolina at Chapel Hill | 
| Smith, James | Princeton University | 
| Smith, Jordan W. | Purdue University | 
| Smith, Martin | Duke University | 
| Smith, Nicholas | Purdue University | 
| Smith, W. Glenn | Centre Asie du Sud-Est (CASE), Ecole des Hautes Etudes en Sciences Sociales (EHESS), Paris, France | 
| Smithwick, Erica | Pennsylvania State University | 
| Sobels, Jonathan | Flinders University | 
| Sognnaes, Ida A. B. | University of California - Berkeley | 
| Sojka, Michael | Standord University | 
| Sokolow, Susanne | University of California - Santa Barbara | 
| Solomon, Mark | University of Idaho | 
| Solow, Andrew | Woods Hole Oceanographic Institution | 
| Som, Sanjoy | Social Action for a Grassroots Astrobiology Network | 
| Son, Kyongho | University of California-Santa Barbara | 
| Song, Conghe | University of North Carolina at Chapel Hill | 
| Song, Xiao-Peng | University of Maryland | 
| Soreghan, Michael | University of Oklahoma | 
| Sorice, Michael | Virginia Tech | 
| Sorokin, Galit | Affiliate; ISET-International | 
| Sotnik, Garry | University of Michigan | 
| Soto-Berelov, Marila | Arizona State University | 
| Spencer, James | University of Hawaii | 
| Spies, Thomas | Oregon State University | 
| Squires, Dale | University of California-San Diego | 
| Sreekesh, S | Jawaharlal Nehru University | 
| Sreekesh, S. | Jawaharlal Nehru University | 
| Srinivasan, Raghavan | Texas A&M Research Foundation | 
| Srinivasan, Veena | Stanford University | 
| Staub, Caroline | University of Florida | 
| Steel, Brent | Oregon State University | 
| Steele, Kristen | University College London | 
| Steen-Adams, Michelle | University of New England | 
| Stefanov, William | NASA | 
| Steiner, William | University of Hawaii at Hilo | 
| Steketee, Deborah | Aquinas College | 
| Steneck, Robert | University of Maine | 
| Stephens, Britton | National Center for Atmospheric Research | 
| Stepp, John Richard | Tufts University | 
| Sterle, Kelley | University of Nevada, Reno | 
| Stevens, Forrest R. | University of Florida | 
| Stevens, Kara | Michigan State University | 
| Steward, David | Kansas State University | 
| Stow, Douglas | San Diego State University | 
| Stuart, Diana | Michigan State University | 
| Styers, Diane | West Carolina University | 
| Suchar, V.A. | University of Idaho | 
| Sullivan, Abigail | University of Maine | 
| Sullivan, Jonathan | University of Michigan | 
| Sullivan, Robert | Argonne National Laboratory | 
| Sun, Chin-Hwa "Jenny" | Gulf of Maine Research Institute | 
| Sun, Shipeng | University of Michigan | 
| Sutch, Richard | University of California-Riverside | 
| Swetnam, Thomas | University of Arizona | 
| Swift, David | Colorado State University | 
| Switzer, Shannon | Conservation Writer and Photographer | 
| Szlafsztein, Claudio | University Federal of Pará |