Apologies in advance to iOS users for pointing to a Flash-only resource, but Cary and Michael Huang’s “The Scale of the Universe” interactive page on NASA’s Astronomy Picture of the Day site is a fascinating update to the classic “Powers of Ten” video created in the 1960s by designers Charles and Ray Eames. We were particularly amused to see Boeing’s Everett, Washington aircraft plant (on the scale of Vatican City) and the virtual Minecraft world (larger than Neptune). follow link
Removing Photos from iPhoto
Despite iPhoto's long history, many people continue to be confused about exactly what happens when you delete a photo. There are three possibilities.
If you delete a photo from an album, book, card, calendar, or saved slideshow, the photo is merely removed from that item and remains generally available in your iPhoto library.
If, however, you delete a photo while in Events or Photos view, that act moves the photo to iPhoto's Trash. It's still available, but...
If you then empty iPhoto's Trash, all photos in it will be deleted from the iPhoto library and from your hard disk.
Interactive Demonstration of the Scale of the Universe