Gene editing is not a new technique but it has been known since decades. The process of editing a gene back then was very slow, hard, expensive and only highly skilled experts were able to do it, but with the advancement in technology it has become very easy, cheaper and the process has sped up.
Scientists are very excited with the new techniques which will help to find new ways to cure the disease and also to understand biological laws and discover some new principles.
But always there are two faces of the coin, one being the good and the other being destructive, so scientist are very much worried that this new technology must not pass on to evil hands.
CRISPR (clustered regularly interspaced short palindromic repeats) is one such gene editing technique. But with this technique germline genetic modification can be performed which is very harmful.
So any mistake may cause several generations because the same sequence of genes will be passed down to generations. There are equal possibilities to invent new diseases which will again hurt the generations to come.
So there is a big debate over this, where some scientist are telling that this may open door to many inventions while others are doubtful about the consequences if anything goes wrong.