Imagine college students sitting around the campus lawn, chatting with friends and working on essays, all while their laptop gets power from the sun to recharge. That's a future Lenovo is working towards if its latest concept PC becomes a reality.

The Yoga Solar PC features a solar panel built into the laptop’s lid.

The central theme to most of Lenovo's concept ideas has to do with getting more screen from a traditional laptop. Perhaps the most unique concept for that com