Growth rings (or "tree rings" or "annular rings") can be seen in a horizontal cross section cut through the trunk of a tree. Visible rings result from the change in growth speed through the ...

Tree rings in the Amazon reveal intensifying rainfall extremes, with wetter wet seasons and drier dry seasons, reshaping ...

New wood is added year after year to the cambium, the area of a tree just beneath the bark, where cell division happens. This expansion creates growth rings, also called tree rings. Though growth ...

The concentric rings in the trunk, besides indicating the age of the tree, also shed light on the corresponding weather conditions during each year of the tree's life. But growth rings are not ...

New wood is added year after year to the cambium area of a tree just beneath the bark, where cell division happens. This expansion creates growth rings, also called tree rings. Though growth rings are ...

Using a technique called synchrotron X-ray tomography to image growth rings in fossilized tooth roots, the researchers were able to estimate lifespans, growth rates, and even the timing of sexual ...

A new study published in Science Advances reveals how early mammals grew and developed during their pivotal Jurassic radiation. Using a technique called synchrotron X-ray tomography to image growth ...