You have a great new business tool that makes everything and anything completely transparent instantly. How to put this in a PowerPoint slide? In comes the fog concept.
The secret:
  • Set a nice "Zen" image as the slide background (right-click the background, choose "Format Background" and select an image)
  • Create some clouds from the "Insert Shapes" menu. Give the clouds a gradient fill ("Format Shape", "Fill", "Gradient Fill"), set the gradient type to "Radial", gradient stop 1 is 0% transparent white, stop 2 is 50% transparent
  • Draw a big rectangular shape (or any shape in fact) and - here comes the trick - set its fill to "Slide Background Fill"