1. An asteroid named 2001DA42 held significance as 2001 was the year of Douglas Adams' death and 42 is the answer to life, the universe, and everything in his work. 2. Caesar salad was invented in 1924 in Tijuana, Mexico by restauranteur Caesar Cardini using raw egg, Worcestershire sauce, and other secret ingredients. 3. Dodgson's method is an electoral system proposed by Charles Dodgson in 1876 where voters rank candidates by preference and the winner is determined by the minimum number of pairwise swaps of candidates.