microbes

South Korea-based artist Seung-Hwan Oh creates some truly unusual portraits by unleashing little microbes and letting them eat away at his medium for months or even years. The project is called Impermanence, and it's a series of microbe-mauled portraits that hardly resemble what they were originally captured as.

Did you know that 90% of the cells in (or on) the human body are bacteria and other microorganisms? Have you ever thought about how many bacteria live on your DSLR camera? Chicago Tribute staff photographer Alex Garcia recently dove into this second question while visiting the Argonne National Laboratory outside Chicago.