Desktop versus Laptop

Personally, I prefer laptop when I work at home, actually, we do not have enough space at home to use a desktop computer. I use a desktop computer at my work office since it is very comfortable to use and also I have enough space to locate it on my work office table.

One advantage of a desktop computer for me is that I can locate its case wherever I wish. At this time, I have located the case under my work office table. I am interested in finding out which one is more environmentally friendly, desktop computer or laptop? Do you have any information  on this? Is that totally based on the type of computer technology either laptop or desktop? I greatly appreciate it to inform me if you have enough instruction convincing on this subject. :shy: