Well, most spraypaints are aerosol-based, which means they contain CFCs and other ozone-depleting materials. Also, rain-based runoff could carry chemicals from freshly-sprayed graffiti to waterways. Even if it’s not spraypaint, a lot of paint is petrochemically-based, which means it comes from oil, which carries quite a footprint.
Traditional paint based graffiti has harmful effects on the environment. But nowadays more and more street artists are using moss for their green graffiti. These are made from a mixture of natural yogurt and sugar to get the moss to cling to the bricks. This makes it eco-friendly and biodegradable, so it is basically harmless for the environment.
It releases toxic chemicals into the environment when sprayed. This includes aerosol which leads to global warming, by prevent heat from exiting the earth’s atmosphere. It is also aesthetically unpleasing to a lot of people. If they could somehow create graffiti that is does not have these terrible chemicals than it would be good.
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