The story of Earth’s atmospheric oxygenation is one of transformation, shaped by both biological and planetary forces. While ...

With Charlie Morton joining the team, the Orioles' starting rotation could undergo a radical transformation, shifting from a big question mark to one of the most solid in the American League.

How about some transformations? If a shape is transformed, its appearance is changed. This can be done in a number of ways, including translation, reflection and rotation. So firstly, translation.

Rotate the rectangle ABCD 90° clockwise about the point (0,-1). Each corner of the image A'B'C'D' is the same distance from the centre of rotation as the original shape.

The 1st Infantry Division from Fort Riley has returned to the National Training Center in Fort Irwin, California, for a division-level training rotation.