Briefing Chat: Can NASA return rocks from Mars? And why dogs have long ears

In this episode: 00:40 The rock samples destined to remain on MarsNature: NASA won’t bring Mars samples back to Earth: this is the science that will be lost 05:24 The genetics of dogs’ droopy earsNature: Do their ears hang low? The genetics of dogs’ adorable floppy ears Subscribe to Nature Briefing, an unmissable daily round-up of science news, opinion and analysis free in your inbox every weekday. Hosted on Acast. See acast.com/privacy for more information.