Earth's valleys tell an ancient story of ice and power. Over millions of years, massive glaciers have carved, sculpted, and transformed the landscape in ways that still take researchers' breath away.

A new study hasrevealed that during the period in which the red planet's distinctivevalleys supposedly formed, the Martian atmosphere may have alreadybeen too depleted to maintain the free-running ...

In the McMurdo Dry Valleys of Antarctica (MDV), streams are an important source of water and hydrologic connectivity between glaciers and lakes across the valleys, however, these streams only run for ...

What's old is new again when it comes to the Cotton Valley sands formation in north Louisiana. An old field that's produced natural gas since the 1940s and '50s, the Cotton Valley formation has opened ...