anthony amose is one of the tree climbing reseahers. >> it's crical to get up in the trees because that is where all the sacks happening. that is what is going on in the tree in order to understand the tree and what it's doing and how it's growing and it's structure and function. we need to get up. threw can't study these trees from the ground. >> two centuries of logging decimated old growth redwoods. these ancient trees covered large portions of californ but today only 5% of the original forest is left. over the next three years, they will branch out and climb the huge trees at 13 locations around the state as part of a $2.5 million project. we caught up the reseahers in humboldt unty where they launchedhe redwoods and climate change initiative. the goal is to answer one key question. >> what is the ture of these trees, the at the convoy yeah and redwoodsn a changing world. >> this is nonprofit dediced to preserving these great trees. >> i can understan the trees and their nction today so we can make smart decisions. >> climate changes is happening now. it's one o those things that we