What are some amazing facts about twins?

(A recent study found that other fertility treatments, such as ovulation-inducing medications or insemination, have overtaken IVF as the main source of multiples resulting from fertility treatment.) With so many twins among us these days, it's high time we celebrate some of the most interesting facts about them. read more

Twins can be conceived by two different fathers iStock/Thinkstock. Heteropaternal superfecundation occurs when a woman has sex with more than one man during ovulation. Sperm from each man fertilizes an egg, resulting in twins. Though this phenomenon is common in dogs and cats, it’s extremely rare in humans. read more

These facts about twinning are sure to leave you in awe. One third of all twins born are identical, one third are same sex fraternal and one third are male/female fraternal. Of the identical twins, half are male/male and half are female/female. Of the same sex fraternal, half are male/male and half are female/female. read more

With so many twins among us these days, it's high time we celebrate some of the most interesting facts about them. 1. Identical twins do not have identical fingerprints. A photo of actual fingerprints from identical twins in 1952. read more