Wilkerson, a DIY enthusiast with a passion for creative projects and hands-on building. For more inspiration, check out The Craftistry for all things DIY!" ...

those trees have similar tree-ring patterns. By starting with a living tree and using wooden objects of different ages, dendrochronologists can work back through time and create a continuous plot ...

"I'm April Wilkerson, a DIY enthusiast with a passion for creative projects and hands-on building." Texans' playoff win over Chargers ends with final score that's never been seen before in NFL ...

Similarly, most living things produce records of their own existence in layered body tissues – often in the form of daily or ...

creating ‘blue rings’ that appear when wood samples are dyed. Since trees and shrubs can live for hundreds of years, identifying these blue rings allows us to spot cold summers in the past.

Tom Howarth is a Newsweek reporter based in Bristol, U.K. His focus is reporting on nature and science. He covers climate change, biodiversity, extreme weather, zoonotic diseases and more.

When the cells growing in a particular year do not solidify, they create “blue rings” when the wood samples are dyed. Since trees and shrubs live for hundreds of years, studying their blue ...

Taken from a tree in Norway, this stained tree sample shows a blue ring from 1902. (Credit: Pawel Matulewski and Liliana Siekacz) Human skin isn't the only thing that can change color after facing the ...

Trees need a certain number of warm days in their growing seasons to grow properly; otherwise, the cell walls of new growth don’t lignify properly, creating ‘blue rings’ that appear when wood samples ...

Well, tree-ring dating, or dendrochronology, can be this precise, and even more so. Dendrochronologists showed that an ancient wooden road uncovered in southwestern England not only was built in ...

Overall, only 2.1% of the pine trees' rings and 1.3% of the juniper shrubs' rings were blue; the cells which hadn't lignified properly were mainly found at the end of growth rings, in latewood ...