nostr:npub1a4e2nxz03a2aqe9n2w6razrr6a6va9qsfl5whyqfv8md9j8alc0snv0hum nostr:npub1su4t3c2h2fl2ws6hfcnn5r7jdn87qvhvaafe5uv3hcwygxz3rjssf6a0dw 
What would it take to build a self-sustaining ecosystem on Earth?