This document summarizes a seminar presentation on green computing. It discusses how green computing aims to design, manufacture, and dispose of computing devices in an energy-efficient and environmentally-friendly way. Some key points discussed include the history of green computing initiatives like Energy Star labeling; approaches like virtualization, using screensavers, and recycling electronics; and advantages like energy savings but also challenges like higher costs. The presentation provides examples of how virtualization and devices like thin clients can significantly reduce energy usage.