The group leading the charge in the search for extraterrestrial life has given the all-clear: an interstellar comet looks to be completely natural and free of any alien tech.The SETI Institute said Wednesday that extensive radio scans by its telescope in Northern California found no signs of otherworldly technology from our solar system’s latest interstellar visitor.The object labelled 3I/ATLAS was discovered last summer sweeping through our neck of the cosmic woods. Scientists quickly...