This document discusses green computing, which refers to environmentally sustainable computing practices that minimize environmental impact. It covers the history and origins of green computing, approaches like green use, design, manufacturing and disposal. Specific strategies are outlined like using energy efficient CPUs, LCDs, power management settings, and recycling electronics. The advantages include energy savings and cost reductions over time, while disadvantages include high initial costs and performance sacrifices. The future of green computing is predicted to include more efficient and sustainable components as the norm.