Neil deGrasse Tyson embarks on a quest with leech expert Mark Siddall in the...(More)

Neil deGrasse Tyson embarks on a quest with leech expert Mark Siddall in the swamps of Connecticut to seek out the infamous decorated leech. Don't miss the new episode of NOVA scienceNOW, airing Wednesday, July 23 at 9pm on PBS. Watch past episodes of the program, try out interactives, and more on our Web site: www.pbs.org/nova/sciencenow Video podcast produced and edited by Melissa Salpietra. Original footage and interviews for NOVA scienceNOW produced by Julia Cort. NOVA is produced by WGBH in Boston. Funding for NOVA scienceNOW is provided by Pfizer, the National Science Foundation, the Howard Hughes Medical Institute, the Alfred P. Sloan Foundation, the Corporation for Public Broadcasting, and public television viewers. This material is based upon work supported by the National Science Foundation under Grant No. 0407101. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.(Less)