Editor’s note:  From “climate adaptation” to “blue carbon,” from “landscape approach” to “ecosystem services,” environmental jargon is everywhere these days. Conservation International’s Human Nature blog looks to make sense of it in an occasional explainer series we’re calling “What on Earth?” In this installment, we break down “land tenure,” a concept with major implications for conservation. What is land tenure? At its most basic, “land tenure” refers to the rights of people or communities to manage (own and use) the land that they reside on. Meaning, if you reside on the land, you get to have control over managing it? Sort of — it’s not that simple. In some places in the world, it’s not easy to ascertain who has the right to manage land, or even who has the right to live there.…