Watch this video from NOVA about rare plants and flowers on HowStuffWorks. Botanist Yin Kaipu and modern-day plant hunter Dan Hinkley stumble upon a roadside garden and find a treasure trove of famous flowers in their native birthplace. See how plants and flowers work in this video from NOVA. NOVA is produced by WGBH in Boston. Funding for NOVA is provided by 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/flower