Summary: In this excerpt from NOVA's "Rat Attack," see how an infestation of rats, triggered by flowering bamboo, threatens the Indian state of Mizoram. Watch NOVA every Wednesday night on PBS. Or join us online at pbs.org/nova. Funding for NOVA is provided by ExxonMobil, David H. Koch, the Howard Hughes Medical Institute, the Corporation for Public Broadcasting, and public television viewers. To learn more, visit http://www.pbs.org/nova/rats
