Modern research demonstrates that plants react to human thoughts and feelings. This essay, chapter 12 of Psychic Exploration, gives the first simple steps in showing that thoughts and emotions are energetic and that this energy can be measured by the biosystem of a plant coupled to a Wheatstone bridge amplifier. The full volume of Psychic Exploration can be purchased as an ebook or paperback version from all major online retailers and at cosimobooks.com. MARCEL VOGEL (1917–1991) was a senior research chemist at the IBM Advanced Systems Development Division Laboratory in Los Gatos, California. He earned his bachelor's degree in chemistry at University of San Francisco in 1940, and co-authored Luminescence of Liquids and Solids (Wiley Interscience, 1943). Until 1957 when he joined IBM, he was president and director of research of Vogel Luminescence Corporation.