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Tree Rings and the Laki Volcano Eruption: A Closer Look at Climate When Iceland's Laki volcano erupted in 1783, its effects rippled around the world. UArizona researchers have analyzed Alaskan tree rings to understand how climate responded in northwestern North America. The work will aid in fine-tuning future climate models. By Mikayla Mace Kelley, University Communications Jan. 27, 2021 UArizona researchers dyed a very thin slice of wood to make ring growth measurements at time scales smaller than the typical year, or season. This allowed them to pinpoint when exactly the trees ...

One in 12 people could face severe drought every year by 2100, according to a recent study. And water stored on two-thirds of the Earth’s land surface will shrink as the climate warms. As plant ecologists, we’re concerned with what that means for forests – one of the largest carbon sinks and biggest assets the world has in the fight against climate change. Droughts can stunt forest growth, kill trees and even change how forests function, or what species they’re made up of. We studied one species in particular to understand how trees have responded to past droughts, and how resilient t...

Bedrock. so we have an ice core that extends back 140,000 years. and so -- >> 140,000 years? >> yes. 140,000. so we're actually standing on two miles' worth of ice below us. and we can use the ice cores like you would use tree rings, to get an idea of what past conditions of climate were like. and we can use what happened in the past to try to predict what's going to happen in the future. >> reporter: but summit's hefty price tag has made it a possible target for proposed budget cuts. the trump administration wants to slash funding to the national science foundation, and many fear that summit ...

And we can use the ice cores like you would use tree rings, to get an idea of what past conditions of climate were like. and we can use what happened in the past to try to predict what's going to happen in the future. >> reporter: but summit's hefty price tag has made it a possible target for proposed budget cuts. the trump administration wants to slash funding to the national science foundation and many fear that summit could be the first casualty. >> i think that's the politics of short-term game, long-term environmental pain. >> reporter: box says he is frustrated by the white house's lack ...

Very wild weather. and, of course, a couple of months ago we were talking about tree rings being analyzed across california and trees that are 500 years old showing the most amount of stress from no water or moisture. now we're going into record el niño. a couple extremes in a couple years. >> wow. thank you. donald trump says his rival may have a legal problem becoming u.s. president. ahead, what he thinks ted cruz should do.