1. School of Environmental Sciences, University of Guelph , 50 Stone Rd E, Guelph, Ontario N1G 2W1 , Canada
2. School of Earth and Space Exploration, Arizona State University , 781 Terrace Mall, Tempe, AZ 85287 , United States
3. Space Science & Astrobiology Division, NASA Ames Research Center , Moffett Field, CA 94035 , United States
4. 2041 Foundation , 130 Wescott Ct, Auburn, CA 95603 , United States