Turns out, our bodies are home to life forms that don’t fit any textbook definition. Scientists just found wild new RNA entities called Obelisks living in our guts—these things aren’t viruses, bacteria, or anything we’ve seen before. Plus, there are microbes and even ancient human relatives that are so weird, experts are rethinking what it even means to be alive (or human). Our biology and history are way stranger than we thought! #Science #ScienceNews #Biology