An image can show us otherwise invisible processes, previously undiscovered life forms, and dramatic change over time. This twenty-minute video features three people who offer photographic evidence of the unknown and unseen. High school teacher Rima Givot teaches from the Genetics and Bioengineering collection. Scientist and photomicrographer Dennis Kunkel talks about the unique and fascinating process of creating photographs of the microscopic world. Environmental photographer Gary Braasch reports on his worldwide travels to document the state of the planet through repeat photography.