c5dc810d_y_Viewer___Climate_Viewer_News__Command
[Windows/Linux Keystroke(s)] Shift + left mouse button + drag up, Shift + up arrow [Mac Keystroke(s)] Shift + up arrow [Result] Tilts the viewer toward “top-down” view. [Command] 
Tilt down
Climate Viewer 3D Tutorial: Using the Google Earth Climate Change, Pollution, and Privacy Viewer | Climate Viewer News
Command