-Wikipedia (I use it very often, I also edit it too, which is a time-donation that everyone should do!) -LLS (Leukemia Lymphoma Society, they have had decent s

-Wikipedia (I use it very often, I also edit it too, which is a time-donation that everyone should do!) -LLS (Leukemia Lymphoma Society, they have had decent success in supporting some drug candidates, my family member works at LLS so I have some good perspective) -350.org (climate change is a huge threat, 350 is one of a few that is fighting against it) -Sam Harris's podcast (not really a charity but ...AI safety, meditation, rationality, identity politics, religion in society, he covers a lot of interesting topics).