What’s In A Kiss? 21 Million Years Of Evolution

In this episode of NPR's Short Wave, Regina Barber and Emily Kwong are joined by Scott Detro from All Things Considered for a bi-weekly Science News Roundup. They discuss research indicating that kissing among primates, including humans and Neanderthals, dates back 21 million years. The episode also explores an experiment on moss spores in space, revealing their surprising resilience to extreme conditions, and a new study on the origin of Earth's moon, suggesting it was formed from a collision with an object from the inner solar system.