This is from a really interesting site - The Future of Self Knowledge. The curator of the site is currently the blog administrator for a research program called“New Sciences of Protection:Designing Safe Living”at Lancaster University. It involves many experts discussing various subjects under the umbrella heading of safe living with various themed workshops spread out over the next year. I found this while searching images of gas masks. I thought I might use them in some new paintings. But after the search I changed my mind. I am not interested in being so serious right now. From the Library of CongressThis image - Gas Mask is by End of the WorldThis image - The End II is by Richard Roberts and I found at Keep Calm.