Thomson, Elizabeth A. “Oceans at risk if policy tool not restricted, researcher says.” MIT News Office. MIT News, 24 Oct. 2001. <http://web.mit.edu/newsoffice/2001/chisholm-1024.html>

Thomson, Elizabeth A. “Here and there.” MIT News Office. MIT News, 18 Jul. 2001. <http://web.mit.edu/newsoffice/2001/handt-0718.html> Professor Sallie (Penny) Chisholm advocates against ocean fertilization, suggesting it could “kick off a terrible chain reaction.”

Thomson, Elizabeth A. “Here & There.” MIT News Office. MIT News, 25 Oct. 2000. <http://web.mit.edu/newsoffice/2000/handt-1025.html> Sallie (Penny) Chisholm explains some reasons why she disagrees with ocean fertilization.

Thomson, Elizabeth A. “Here & There.” MIT News Office. MIT News, 23 Aug. 2000. <http://web.mit.edu/newsoffice/2000/handt-0823.html> Sallie (Penny) Chisholm discusses the potential risks of ending greenhouse warming through ocean fertilization.

St. Clair, Richard. “Commercial ocean fertilization: a wise use of scientific discovery?” Center for Environmental Initiatives. MIT News, 3 Nov. 1999. <http://web.mit.edu/newsoffice/1999/chisholm-1103.html>

Thomson, Elizabeth A. “Chisholm: Don’t muck around with oceans.” MIT News Office. MIT News, 13 Jan. 1999. <http://web.mit.edu/newsoffice/1999/ocean-0113.html> 

Waugh, Alice C. “Chisholm discusses value of ecosystem research.” MIT News Office. MIT News, 25 Oct. 1995. <http://web.mit.edu/newsoffice/1995/chisholm-1025.html> 

Gardner, Matthew T. “Syposium examines evolution of Earth system.” Earth System Initiative. MIT News, 17 Mar. 2004. <http://web.mit.edu/newsoffice/2004/earth-0317.html>