As a tree ambassador, you will collect money to plant tree.
Collect 1 € per person, it is the price to plant one tree in Africa.
Our objective is to plant 2 million trees by 2020.
https://steemit.com/byteball/@chrisaiki/byteball-use-a-thon-plant-2-million-trees-by-2020
You are welcome to register as an ambassador on the wiki
https://ventureo.frama.wiki/2_million_trees_by_2020
Or by replying to this post.