> The question then becomes, whether we can create new genetic chemistries that are not based on DNA, but some new genetic polymer? Is this article a PR piece?

> The question then becomes, whether we can create new genetic chemistries that are not based on DNA, but some new genetic polymer? Is this article a PR piece? I am a bit annoyed by the lack of reflection in this naive approach to develop xeno-biology and let it loose in our (only) planetary habitat. If it were the only statement of the kind in the sub-articles, it would be fine. There is, however, a strong disregard for second/third systems effects. Radical approaches alone do not cut it, they have to 'fit'. Not that it is easy to do in the first place, but please think about the ecosystem as a whole. It is hard to take these type of statements seriously - but this is YC here, an outlet with a lot of media impact. Please communicate a responsible call for action.