Like careful note-takers during the past 1,250 years, Engelmann spruce trees high in the Yellowstone National Park backcountry have left behind a record of how harsh summer temperatures have been. A ...

An international team of researchers has found evidence in tree rings that backs up prior research suggesting tropical cyclones (typhoons in the east, hurricanes in the west) are migrating slowly ...

Here we have tree-ring samples from two trees that grew not too far from each other. Notice how the patterns for both are the same except that, for one, the rings are compressed, which shows that it ...

The Bannister Building looks distinct among the typical red-brick buildings on campus, yet students walking by, preoccupied by their phones and classes, fail to notice the 40-foot-long steel columns ...

Email notifications are only sent once a day, and only if there are new matching items. Archaeologist Thomas Windes started taking tree-ring samples from very old buildings 35 years ago. That was at ...

Research conducted by UA researchers over the last two years has doubled the previous knowledge researchers had about climate variability in the Upper Colorado River Basin. A recent project conducted ...

Usage Restrictions The photo "Taking tree-ring samples on Mongolia's Khorgo lava field" may only be used to illustrate a story about the research described in the accompanying news release, "Droughts ...

KNOXVILLE, Tenn. — East Tennessee’s roller-coaster climate featured a range of record-setting droughts and downpours in recent years. When extreme floods or dry conditions set records, the official ...

ASPEN, Colo. (AP) - Mike Cooperstein and Jason Konigsberg maneuvered a 6-foot long cross-cut saw with menacing teeth into position Tuesday on a hulking spruce trunk that was ripped out of the ground ...