There are two things in life for which we are never truly prepared: twins. – Josh Billings Milena O'Hara · April 27, 2014 · Do you know one out of every 30 babies born is a twin? Thanks to older mothers (who naturally tend to have multiples), IVF, and fertility drugs, there are 1,009,337 extra twins now than in 1981. That’s a lot of double buggies! (The Atlantic) (Computed from CDC data/Alexis Madrigal).