One unintended consequence of families sheltering at home is that children’s vaccination rates have gone way down. In New York City, for example, vaccine doses for kids older than two dropped by more than 90 percent. That could mean new outbreaks of measles and whooping cough, even while we’re struggling with COVID-19. Joining Ira to talk about decreasing vaccination rates are two pediatricians, James Campbell, professor of pediatrics at the University of Maryland School of Medicine in Baltimore, and Amanda Dempsey, professor of pediatrics at the University of Colorado Denver. Electronic musician Grace Leslie makes music that creates a sense of calm—long notes held on the flute, creating rich tones, and layered sounds. But her method for creating her songs sets her apart from most other electronic musicians: Leslie collects heartbeats, neuroelectric activity, and other biofeedback with sensors on people’s bodies. She feeds this input into a computer, which then converts the data into flowing waves of sound. As a researcher at Georgia Tech in Atlanta, she explores how the brain and body react to music at the university’s School of Music. Leslie joins Ira to talk about her methods for creating art, and the mysteries of why music elicits an emotional response from those who listen. Hydroxychloroquine, the malaria drug the president promoted as a treatment for COVID-19, has not been proven effective against the virus. And new research published in The Lancet, involving 96,000 patients around the world, found the drug is linked to irregular heartbeats and increased risk of death for people who take it. As a result, numerous trials to further understand the drug have been put on hold, including one planned by the World Health Organization. IEEE Spectrum news editor Amy Nordrum joins Ira to explain what this means for the future of understanding hydroxychloroquine as a potential help against coronavirus. Plus, understanding false negative results in COVID-19 tests, engineering virus-killing masks, and how researchers found a way to trail elusive narwhals and record their sounds—all in the name of understanding these shy, sea ice-dwelling mammals better even as the world they depend on changes. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

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“What did the council decide on item 42?” — answered with the speaker and the moment.