All we know that we are not an immortal and life is short, but to sympathy with universal misery is not enough. it is our duty to do whatever we can do to stop this natural disaster such as let there be nothing in excess, do as much plantation as you can etc. Now it is an indispensable condition for us to save our earth because I believe live there where everything is well for us. Don't say why bother? because if you bother today then only tomorrow will come for your next generation.
Don't talk like " as many men, so many minds." Why don't you see how many people were killed due to this terrorism. I don't think the person who kill so many innocent people have some reason because when someone killed in the family, everyone had to suffer. In my point of view I consider all the terrorist as a "demon" who killed an innocent people along with their family. They are enemy of the humanity and their deeds are so obnoxious that they don't deserves mercy too.
Linux is the best operating system because i feel It is more protective against virus. You can get license version at very good rate as well as no need to install other driver and Microsoft office.
And good control given for users on hardware component.