- Mammoths were still alive when the Great Pyramids were built, as a small enclave of dwarf mammoths on a Russian island survived into antiquity.
- The idea of a personal carbon footprint as we know it was popularized by fossil fuel company BP.
- The notion that the typical serial killer is a clever psychopath who effortlessly outwits authorities is a Hollywood myth. On average, serial killers have below-average IQs.
- Although attempts have been made to train monkeys/apes in sign language, none of them has ever been confirmed to ask a question. The only non-human being to thus far ever ask a question was Alex the grey parrot, who saw himself in the mirror and asked "what color?"
- It is widely known that Leif Eriksson reached the coast of America centuries before Columbus reached Hispaniola in 1492, but the first-ever European to have reached America might have been the Irish saint Brendan of Clonfert. The navigator's tales are recounted in Irish myth, and contain strong indications that his quest to find the 'Isle of the Blessed' made him actually reach what is now North America as early as the 6th century. Historical evidence of this is thin, but British explorer Tim Severin proved in 1978 that it would indeed have been possible to reach the Americas with 6th century naval technology, recreating and documenting the journey in what he called 'The Brendan Voyage'.