William Geffen
@WilliamGeffen@mastodon.social
- Name
- William Geffen
- First seen
- 2023-01-08T11:04:15.833544
- Instance
- mastodon.social
- About
Retired pediatrician. Interested in our place in the universe and in time (evolution, history) and in the future: where we have been, where we are, and where we are going).