Epigenetics
In 2005 biologist Michael Skinner witnessed something that shouldn\u2019t have happened. His mice were exposed to a toxin. A toxin which caused the children of these mice to experience birth defects. This wasn\u2019t the surprise since the mice could easily have been exposed while in their mother\u2019s womb. This could explain the defects. What it couldn\u2019t explain was the fact that the next generation also had this defect.