Thu, 13 September 2018
Strawberries had both male and female parts, like most plants, until several million years ago. This may seem like a long time ago, but it actually means strawberries have some of the youngest sex chromosomes around. What are the advantages of splitting a species into two sexes? Host Sarah Crespi interviews freelance journalist Carol Cruzan Morton about her story on scientists’ journey to understanding the strawberry's sexual awakening.
In 2016, experimental Zika vaccines were swiftly developed in response to the emergence of serious birth defects in the babies of infected woman. Two years after the height of Zika cases, a lack of human subjects has stymied vaccine trials. The National Institute of Allergy and Infectious Diseases plans to overcome this hurdle with “human challenge experiments”—vaccinating people, then intentionally infecting them with Zika to see if the vaccine helps them resist the virus. Meagan Cantwell talks with staff writer Jon Cohen about his news story that highlights the risks and rewards of human challenge experiments.
This week’s episode was edited by Podigy.
[Image: Public domain; Music: Jeffrey Cook]
Authors: Sarah Crespi; Carol Curzan Morton; Meagan Cantwell; Jon Cohen