Podcast: Spreading cancer, sacrificing humans, and transplanting organs

Online news editor David Grimm shares stories on evidence for the earth being hit by supernovae, record-breaking xenotransplantation, and winning friends and influencing people with human sacrifice.
 
Staff news writer Jocelyn Kaiser joins host Sarah Crespi to discuss how small membrane-bound packets called “exosomes” might pave the way for cancer cells to move into new territory in the body.  
 
[Image: Val Altounian/Science]
 
 

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