What can we conclude from the article?
The new method for extracting germanium that the Freiburg scientists are trying is greener and cheaper than the traditional one.
Germanium can be easily produced during the process of mining zinc or burning coal.
Sunflowers and corn are currently the most efficient plants to use when extracting germanium.
The process of harvesting germanium from plants isn't costly because after harvesting, the plants can be used for biogas.