"We can look at the tree rings as a timeline and connect with people that lived in the past, and I think that gives us more of a sense of who we are, but also a sense of where we're going and perhaps ways to deal with some of the issues that we might collectively face.
"Radiocarbon dating has been a revolution in terms of the way stuff is dated in the past and is used by scientists all over the world," Pearson adds.
Dendrochronology and radiocarbon dating have intertwined histories, she explains, with roots firmly planted at the UA.
The time between then and now is just a single tick on the universe's clock.Fifty, 20, or 100 years is a lot of time, wherein a lot can happen.Fifty years is the difference between Alexander Graham Bell's telephone and television.If a Bigtooth Maple were cut down on Mount Lemmon in 2016 and it had 400 rings, you would know the tree started growing in 1616. What if it's been used to build a home or a ship or a bonfire?The rings could still tell how many years the tree lived, but not necessarily when. He set out on a series of expeditions across the southwest to bridge the gap between contemporary wood and wood beams from the ruins of civilizations long gone.