Bioenergy utilizes energy from plants to create fuels. But, how exactly do plants get so much energy? In part one of a three part series, Bioenergy Basics, we focus on how plants store energy, what crops are best for bioenergy, and how researchers are working to make these plants better. Bioenergy researcher Cullen Vens takes us on a photon's journey, following the energy from the sun to a plant.