Listening practice: The rings that remember rain

Imagine holding a pencil-thin piece of wood taken from the side of an old tree. It looks quiet at first: pale lines, dark lines, one ring beside another. But according to NOAA's Climate.gov, those rings can carry a weather history from the place where the tree grew. In a dry region, a wider ring often points to a wetter growing season, while a narrow ring can point to stress from limited water. A ring is not a diary with words, so scientists have to be careful. They do not read one tree like a fortune-teller reads a hand. They compare many trees from the same area, looking for a shared pattern of thick and thin rings.