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Welcome to another in our series of coronavirus episodes of Scientific American Science Talk posted on August 6th, 2020.

I'm Steve Murksky.

In this episode, we hear again from contributing editor W.A. Gibbs.

As part of a national Press Foundation Fellowship he's doing,

Gibbs spoke on July 30th with Arthur Kaplan,

head of the New York University School of Medicine's

Division of Medical Ethics, about some of the ethical issues that researchers have to consider

in testing experimental vaccines against COVID-19. Questions like, does participating in a vaccine

trial mean you cannot receive an experimental medicine for COVID if you do get sick,

and would it be ethical to test the vaccine in prisons where inmates face very high risks

of coronavirus infection? Gibbs and Kaplan also discussed ethical questions will face when a vaccine

eventually is approved for use, such as whether there's a

moral argument for strong-arming a drug company into releasing its vaccine technology into the

public domain. Also in this episode, we'll hear a sponsored segment from AstraZeneca, and we also

have a short report from Scott Hirschberger on how our wacky brains think about round numbers

versus specific numbers when considering how good a disease treatment may be. But first,

...