alt Hacker News> Since 1991, the EPA has held that glyphosate is not carcinogenic; it was (at the time) categorized "Group E", which means that not only is there not evidence for it being carcinogenic, but that there is material evidence that it is not. Later, IARC (in a decision that was controversial among global public health agencies) listed glyphosate as a 2A probable carcinogen, alongside red meat, potatoes, deep fryer oil, and a slew of scary chemicals that includes many other insecticides and herbicides.
Excuse me if I dont believe "this stuff isnt harmful".
And Arsenic was once safe.
Asbestos was the most amazing fireproof wonder material.
Thalidomide was a wonder drug with no side effects.
Tetraethyl lead was perfectly safe everywhere.
Fen-phen was a great diet drug.
Id also add "consumption of fluoride in water supply" (topical/toothpaste makes sense, consumption does not).
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I mean, you can believe whatever you want to believe, and the EPA can be wrong, but "the EPA has been claiming X since 1991" is not a very powerful argument for "not X".
(There are mechanistic reasons to believe glyphosate is less harmful than other landscaping treatments; it has a fairly elegant mode of action.)
Those aren't really great examples, considering that Arsenic and Asbestos have been known to be harmful for centuries/millennia.
Thalidomide never even made it to use in the USA.
Fluoride being good for teeth was discovered by fluoride naturally being in the water already
Can't speak for the other two, but I hope you're not basing your fears on stuff like that.