Corrections

When we get something wrong, we fix it and say so here, with the date. To report an error, email [email protected].

2026-10-21Thomas Midgley Jr.: Freon's gain now reads fridges that would not poison or burn. We had written cheap cooling for food and medicine, which no source supports.
2026-10-21Alfred Nobel: Dynamite was used by both armies in the Franco-Prussian War, in small and unknown amounts. We had written weapons for both sides.
2026-10-21Bassett warned that banning apartments might not survive in court. We had written that he advised cities not to ban them, which overstated his view.
2026-10-20Alfred Nobel: Dynamite reached the Franco-Prussian War in 1870, three years after the 1867 patent. We had written four.
2026-10-20Mark Zuckerberg: Facebook cut the weight of the angry reaction to zero in September 2020. We had written late 2020.

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