Popular stories, tagged aliens and environmentalism and adventure, ordered by reader boosts all time
1

A World in the Road by Thuktun Flishithy

No Plan Survives First Contact

adventure aliens environmentalism first contact political science fiction

5 boosters
2

Apex Predator by caerulex

Aliens, intergalactic space travel, mind powers, and adventure!

action adventure aliens colonization environmentalism friendship politics science fiction

2 boosters