Wednesday
The probability of drawing unique names in a secret Santa is an alternating series that eventually converges at 1/e. (Obvious once I realised that it is related to derangements).
Thursday
Individual African elephants can have different numbers of ribs.
Friday
Found a neat way of explaining !n.
Saturday
Catnip can for some cats be a calming influence.
Sunday
The large blue butterfly caterpillar is adopted by ants and feeds on ant larvae until it metamorphosises.
Monday
Michael Bear is the present Lord Mayor of London (not to be confused with Boris, the Mayor of London).
Tuesday
Rupert the bear was 90 this year.
