Images from an iphone microscope. Image stolen from Wired Science.

The fascinating world of microscopic life is now reachable to everyone with a phone camera and $10-$20 worth of parts. These microscopes are powerful enough to even see blood cells. The inventors are even creating an app that can stitch images together to find out blood oxygenation levels. For step by step instructions on how to turn your phone into a microscope, check this out.