It all started with yogurt. Researchers working for a dairy food production company named Danisco were interested in the protection from virus attacks of a bacterium responsible for the fermentation of milk to make yogurt. They found out that the bacteria were developing resistance to infection, and that such a resistance was related to a biological system involving a family of DNA sequences known as CRISPR. I won't go into too many technical details about it, but the idea is that the immune system of the bacterium is able to preserve DNA sequences of a virus from which it had previously been attacked and use them as a template to detect the sequence of new invaders. Now, it's all very complicated, but what matters for the thread is that scientists found a way to use this system in order to advance gene manipulation techniques to an astonishing degree, with all the implications this can have scientifically, technologically, and ethically. Unsurprisingly, this is considered one of the most important results in the history of biology. We need to face with the fact that accurate gene editing is now a reality, and inevitably it is becoming an increasingly popular topic. I believe that the advances in genome editing, together with AI/automation and climate change, are perhaps the three major issues that our society will have to deal with in the next few decades. Or, if this is not true on a general level, they're surely the ones I personally think about the most.