Wow, I hadn't realized the effects of the atomic age were that widespread, creepy.
From article "Breathing Everyone's Air" - scroll down to that heading in http://www.scifun.ed.ac.uk/card/facts.html
(My point is that temperature is probably an odd man out in graph terms, our usual reference points are not actually at zero.)
This one only exaggerates things by a factor of 2, at least.
If you plot human body temperature in Kelvins, the difference between someone with hypothermia and someone with a raging fever are relatively slight (under 2%).
If some sort of catastrophe befalls our current civilization and future archaeologists attempt to C14 date our fossils and artifacts derived from carbon sequestered during this era, their results will be wildly unreliable.
Zero can be just as arbitrary a starting point as non-zero.
Far less interesting a read, an article about how many molecules of Beyonce's breath you inhale with each breath. https://www.huffingtonpost.com/2014/12/12/beyonce-breath_n_6...
Granted, paleontology looks back in the span of millions to billions of years, so those ancient fossils are ok, but I imagine future scientists will grind their teeth an awful lot when trying to make scientific sense of our present day.
http://webarchive.nationalarchives.gov.uk/20130403200836/htt...
Chernobyl is just a tiny blip.
Before the industrial revolution, silver did not tarnish. Burning coal introduced enough sulfur in the air that silver started tarnishing.
> While coal-burning power plants are responsible for producing most of the sulfur dioxide out there (and thus acid rain), they don’t contribute that much of the compounds that actually cause silver to tarnish, namely hydrogen sulfide—best known as a key player in the smell of rotten eggs and flatulence—and the similarly pungent carbonyl sulfide. About 90 percent of the hydrogen sulfide and more than two-thirds of the carbonyl sulfide in our atmosphere come from (you guessed it) volcanoes, salt marshland, undersea vents, and other natural sources.
[1] https://www.washingtoncitypaper.com/columns/straight-dope/ar...
And here I thought they were going to say rotten eggs and flatulence...