By counting the rings, Schulman confirmed what seemed impossible: the tree was at least 4,800 years old. Later samples in 1957 confirmed Methuselah’s age and placed it as the oldest living non-clonal ...

Trees tell us stories. Scientists count their rings to figure out how old they are and when those years add up, it can be a sign of nature's endurance in the face of change. Trees that have stood ...

The longer, warmer days of spring spark phenological changes in trees, from root to tip. As their limbs stretch and twist ...

Bristlecone rings, which vary in width year to year ... "in the persistent ability of a 4,000-year-old tree to shut up shop almost everywhere throughout its stem in a very dry year, and faithfully ...

Each horizontal bar represents the tree-ring pattern for one tree ... and dead samples from the long-lived bristlecone pine (the oldest one has been growing for a remarkable 4,600 years ...

However, many old trees have long lost the core of their trunk, so scientists have to rely on both the rings they can see, as well as statistical models that project the total number of rings ...

We can then create a model based on the time period for which there is both recorded climate data and tree-ring widths. That model can be applied to the rings that formed before climate records began ...

In Chile's ancient rainforest, the 'Gran Abuelo,' a 5,400-year-old tree, faces a new threat from a proposed highway. Scientists warn the road will increase the risk of wildfires and endanger the ...