I am writing up two charity ideas I’ve wanted to investigate, but haven’t been able to, in the hopes someone will investigate them further. If you end up investigating either, I'd be most interested to see what conclusions you come to!
Vulture preservation as a global health intervention
Since the mid 1990's the vulture population in India has been rapidly declining. The reason is due to a few chemicals which are fed to livestock, which is highly poisonous to vultures.
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Summary
This post will summarize the trajectory of Wild Animal Initiative’s field-building for wild animal welfare science so far, along with patterns and indicators we want to see more of going forward. Beginning with an initial phase focused on establishing credibility and awareness of the field, through a second phase that has placed more emphasis on the distinctiveness and broad priorities of the field, we are now moving into a third phase designed to co...
If you really mean "ancestors" rather than "descendents", my best guess would be the Peruvian pre-colombian peoples. In their worldview, there were three worlds: Hanan Pacha (heaven), Kay Pacha (our world, which "mother Earth" or "Pachamama" is a part of), and Uku Pacha (the underworld). The dead interacted with the living in many ways, mainly related to fertility, such as fertilizing the soil for agriculture and being the craddle of new generations. For these reasons, they cared deeply about preparing the passing of deceased leaders and maintaining values and rituals (e.g., sacrifices) to keep their ancestors happy.
Another guess would be the ancient Egyptians, who also had elaborate rituals for the dead and deities associated with the deceased. I don't know much more about them, though.
Sorry I did mean descendants, this is quite interesting though!