The hydrologic cycle, sometimes called the water cycle, is the movement of water between the air, land and bodies of water. The hydrologic cycle includes numerous physical, chemical and biological processes. Almost 98% of the water on Earth is in...

The path followed by water in Nature. Atmospheric water is deposited as rain, snow, sleet, hail and dew. Some of the water falling on the surface will run off directly to streams, rivers, lakes and oceans. The remainder will percolate into the ground....

In hydrology, infiltration refers to the maximum rate at which a soil can absorb precipitation. This is based on the initial moisture content of the soil or on the portion of precipitation that enters the soil. In soil science, the term refers to the...

see Biogeochemical cycle, see Citric acid cycle, see Federal driving cycle, see Hydrologic...

The Earth's water is always in movement, and the water cycle, also known as the hydrologic cycle, describes the continuous movement of water on, above, and below the surface of the Earth. Since the water cycle is truly a "cycle," there is no beginning...

It comes in only one flavor _ no Fierce Grape or Riptide Rush available _ and you certainly won't see your favorite basketball star gulping it down on the sideline during a timeout. But a group of scientists recently discovered that one...

The government's climate change research is threatened by spending cuts that will reduce scientists' observations from space and on the ground, a study says.A major problem, the National Research Council said Thursday, is the program director's lack of authority to organize spending and research among...

When tremors started cracking walls and bathroom tiles in this Swiss city on the Rhine, the engineers knew they had a problem."The glass vases on the shelf rattled, and there was a loud bang," Catherine Wueest, a teashop owner, recalls. "I thought a truck had...