Earlier today I spoke with a friend about my excitement with the progress of science, how I keep reading about amazing achievements that somehow seem like no big deal. He asked for some examples, since he did not share my feeling that scientific progress is so quick and significant. This made me decide to start posting more about cool stuff I read about, even if I have no special thoughts about it.
Here is the first example, just a few hours after that conversation. In this paper, the researchers identified human microRNAs that induce regeneration in mice hearts, and used them in living mice to achieve almost complete recovery following myocardial infarction in mice.