2011 and closed its beaches for more than a decade. Former News Intern Alexa Robles-Gil joins host Sarah Crespi to talk about how researchers have used that time to study the island’s shark populations and test techniques for preventing attacks, in the hopes of protecting lives and reopening the island’s shores.

down the precursors of kidney stones. Weston Whitaker, a research scientist at Stanford University, joins the podcast to discuss how he and his team created a stable niche for these useful microbes in the human gut and overcame some of the challenges of controlling them once inside.