This time,scientists hope to learn more about the formation, wind speed and shape of tornadoes.

VOA: special.2009.06.09

With the new radar, they could actually detect wind circulations within storms that could lead to tornado formation.

CNN: STORY HIGHLIGHTS

The formation of table mountains is a result of the erosion of softer rocks by wind and rain.

UNESCO: Culture

During the formation of penitentes, the furrows deepen such that they are sufficiently sheltered from the wind for melting to occur - which helps further deepen the depressions.

BBC: Ice blades threaten Europa landing