Family visits the exhibition, marvels at a 3D printer, Wissensnacht Ruhr, a project for the climate metropolis Ruhr 2022, here at Dortmunder U, Famili

- Image ID: RG5YHX

Family visits the exhibition, marvels at a 3D printer, Wissensnacht Ruhr, a project for the climate metropolis Ruhr 2022, here at Dortmunder U, Famili

Rupert Oberhäuser / Alamy Stock Photo

Image ID: RG5YHX