Modern medicine can do some amazing things. This article I found rather amazing. Don Ingber has developed a process to clean blood. An electromagnet and some plastic coated iron-oxide beads pull sepsis causing bacterium or fungi out of the blood. I'll let you read the article after clicking the link.
I'm always amazed at what technology has been developed. Humans have not adapted to a wide range of environments and I believe that we will need technology to help us continue as a race. Challenges like global warming (man made or not), natural disasters, biological threats, etc. will all threaten our continued existence and we will need to develop ways to combat them. Our ability to create technology will be our saving grace.
Blood cleaning.
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