26Abbas and Hassan O
In 2009, despite having DNA evidence of the suspect, German police could not prosecute the perpetrator of a $6.8 million jewel heist because the DNA belonged to identical twins (Abbas and Hassan O), and there was no evidence to prove which one of them was the culprit.
27. Young children, especially twins, will often develop their own language that they can understand but is unintelligible to any adult observers.
28. In 2015, astronaut Scott Kelly became even younger than his elder twin brother (who is also an astronaut) Mark Kelly (born 6 minutes before Scott), by 3 milliseconds after the completion of his one year mission on the International Space Station.
29. There exists a case of conjoined twin girls named Krista and Tatiana Hogan, who are connected at the thalamus. They can hear each other's thoughts and see through each other's eyes.
30. A set of British twins separated at birth and raised by different adopted parents, fell in love and got married only to realize that they were brother and sister.