AI Summary
A new RNA virus has been found in a hot spring, indicating that RNA viruses can survive in extreme temperatures. This suggests the possibility of a third kingdom of RNA viruses.
A research group has discovered a novel RNA viral genome from microbes inhabiting a high-temperature acidic hot spring. Their study shows that RNA viruses can live in high-temperature environments (70-80 degrees Celsius), where no RNA viruses have been observed before. In addition to the two known RNA virus kingdoms, a third kingdom may exist.