Here is a great website for finding out where to recycle all sorts of stuff. earth911.com/ Just put in your zip code and what it is you want to turn in. Goodwill always takes anything- and I understand that they can't throw anything away: they have to find use for it.
You can either Reuse or donate, recycle, The most proper way to dispose of it is to recycle it. But, you can always contact your local Garbage collector, if you still want to dispose of it they will give you instructions of how to go about it... But you may want to resell the workable parts in pawn shops.
There are many places that will take e-waste, depending where you live. This site will help you search for a facility in you area just fill out you search criteria:ciwmb.ca.gov/Electronics/Collection/Recy....
There are actually a few places that you can take them, but you may have to pay. Someone in waste management or recycling should be able to direct you to a center. In addition, there are also some companies that will refurbish these computers for resale or to give to disadvantaged schools and children.It's worth checking into.
What could be better, giving to humanity and the environment?
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.