How Do Subsea Trees Work? A subsea Christmas tree is the pressure-containing valve assembly mounted on a subsea wellhead that controls, monitors, and safeguards flow from (or injection into) a subsea ...

Urban trees often stand at the center of plans to fight rising city temperatures. Their cooling power seems simple and effective. But new research shows that the truth is more complex. Trees do cool ...

Minnesota is well known for frigid cold and lots of snow, and this winter is no different. According to climate data, average 24-hour temperatures for December through February in the state are around ...