Yellowstone is growing up.

• Position: STATELINE - Brief article

Two domes inside the collapsed, restless volcano in Yellowstone are swelling faster than has ever been recorded. The huge caldera that stretches across the park's middle has been rising and falling for at least 15,000 years, sometimes swinging more than 10 feet. But the latest upward motion has been unusual for its speed. The activity may be spurred by an infusion of...