MIT Works to Power Computers With Spinach (AP) AP - "Eat your spinach," Mom used to say. "It will make your muscles grow, power your laptop and recharge your cell phone... " OK. So nobody's Mom said those last two things. But researchers at the Massachusetts Institute of Technology say they have used spinach to harness a plant's ability to convert sunlight into energy for the first time, creating a device that may one day power laptops, mobile phones and more.