Podcast: We are excited to be offering you a podcast this year. We will be bringing you sounds from the field from our scientific trips, expeditions, studies, and research. Check back with us for more updates. Contact us with your questions.

First Line of Defense: You can watch the USDA video now online!
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ALB in motion: Watch a movie about ALB.
Video: Courtesy Rick Hoebeke, Department of Entomology, Cornell University

Created for nonprofit educational use by Roger P. Hangarter at the Indiana University, Department of Biology, these videos consist of images taken via time-lapse photography, which allows us to easily see the movements of plants and clearly demonstrates that plants are living organisms capable of some extraordinary things.

Sensitive Plants: The leaves of Mimosa have the capability to display thigmonasty (touch-induced movement). In the sensitive plant, the leaves respond to being touched, shaken, heated or rapidly cooled. The speed of the response depends on the magnitude of the stimulus.

Circadian Rhythms: Plants are able to respond to changes in time. Among the more obvious of the clock-like responses are "sleep movements" such as the closing of flowers and changes in leaf position that many plants display at night. This short movie shows the movement of bean leaves over a 48 hr period.