epa10350156 A 'zero waste' Christmas tree built by using some 200 end-of-life computers by the library staff of the University of Warmia and Mazury, is on display at the library's headquarters in Olsztyn, northern Poland, 05 December 2022. The installation is three meters high, and at the top, instead of a star, it has three monitors displaying the university's logo. EPA/Tomasz Waszczuk POLAND OUT
