The ability to save any of your selections and then use them at any given time is another useful Adobe Photoshop option. Let me show you how to use it.
Google Street View is now also providing thousands of miles of Street View imagery in the affected nuclear disaster areas that were collected before and after the disaster.
Another great TEDtalk about genetically engineering male mosquitoes to make them sterile, and releasing the insects into the wild, to cut down on disease-carrying species.