A touch to the Aplysia's siphon causes a gill withdrawal, a simple reflex for studying memory.
Venomous carniverous cone snails are a rich source of molecules for scientific research and potential drug development.
In this ten-minute Q&A session, Dr. Olivera answers questions on cone snail behavior, venoms, and biodiversity.
What is mind? Can molecular biology help us understand mental function?
The history of localization of function in the brain, and research that led to the understanding of localization of memory.
Understanding the neural circuits in the spinal cord that control movement.
The cellular and molecular nature of learning and memory, investigated in simpler sea slugs and more-complex mice.
In the 2004 Holiday Lectures on Science, HHMI investigators Ronald M. Evans and Jeffrey M. Friedman discuss how the body regulates weight by carefully controlling the storage and burning of fat—and how a better understanding of these complex metabolic systems could lead researchers to treatments...
Dr. Friedman introduces the genes and circuits that control appetite, including the key role of leptin.
Dr. Evans describes how fat communicates with muscle and how diet and exercise influence that relationship.
Four lectures highlight the research of two scientists who have made groundbreaking discoveries elucidating the molecular basis of circadian clocks—the internal timekeepers that govern fluctuations in behavior and physiology on a 24-hour cycle.
Dr. Joseph Takahashi takes us on an exciting journey into a very special region of the brain—the biological clock that governs our physiology and certain behaviors.
Although tiny in size, the fruit fly has had a major impact on our understanding of circadian rhythms.
This survey, developed by Horne and Ostberg, will let you determine if you are a morning or an evening person.
Explore the biology of the symbiotic relationship between the Hawaiian Bobtail squid and bioluminescent bacteria Vibrio fischeri.
Different gaits employed by animals and how the nervous system is able to switch between them.
To accompany the lecture series Viral Outbreak: The Science of Emerging Disease.
To accompany the lecture series AIDS: Evolution of an Epidemic. In this activity, you simulate taking HIV antiretroviral drugs by using tic tac mints and Kool-Aid packets.
This activity uses the planaria's property for regeneration and compares how long it takes for planaria cut in different places to regenerate a head.
In this activity, students rear mosquitoes in chambers and test variables that might affect the life cycle of the mosquito.
Four decades of research on finch species that live only on the Galápagos Islands illuminate how species form and multiply.
In the Caribbean islands, adaptation to several common habitats has led to a large adaptive radiation with interesting examples of convergent evolution.
Finches discriminate between members of their own species and those of a closely related species based on song and appearance.
The following classroom-ready resources complement The Origin of Species: The Beak of the Finch. By following four decades of research on the finches of the Galápagos islands, the film illustrates how geography and ecology can drive the evolution of new species.
The following classroom-ready resources complement The Origin of Species: Lizards in an Evolutionary Tree. Research on the anole lizards is enriching our understanding of evolutionary processes, such as adaptation by natural selection, convergent evolution, and the formation of new...