You have a hand in deciding the future of your world.... [Y]ou might grow up to save lives, build cities, stop wars.
Noah to his young Preferred in A Shadow in Eternity (p.35)
(Yes, shameless self-promotion, but so what?!)
All of us cannot directly "save lives, build cities, stop wars", but we can make a difference. And every little bit counts. The following are some of causes I believe in, some that I lend my voice/time/money to:
(In no particular order)