The U.S. Geological Survey said it and other agencies were monitoring the situation and would issue additional alerts "as needed." ...

In geology, even small layers can tell big stories. But figuring out the origins of such small layers can be a challenge, ...

Tickets to the popular Steiner log cabins tour on Mount Hood go on sale Tuesday for the Aug. 9 event just as organizers are announcing plans to publish a coffee-table book on the Steiner family ...

Nearly 2,000 years ago, Pliny the Younger described the ground shaking as Mount Vesuvius exploded in fury. That eruption devastated Pompeii.

Located just off U.S. Highway 26, take in views of Mount Hood while kayaking and hiking at Trillium Lake.

The Vatican Museums has unveiled the last and most important of the restored Raphael Rooms. These are the spectacularly frescoed reception rooms of the Apostolic Palace that in some ways ...