Online news editor David Grimm shares stories on evidence for the soil 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 recent territory in the body.
[Image: Val Altounian/Science]
Source: sciencemag.org