On this week's show: How an ancient mass extinction event transformed vertebrates and a roundup of daily news stories.

On this week's show: The MAVEN mission to study the atmosphere of Mars returns its first results and a roundup of daily news stories.

On this week's show: Where the Amazon basin's stunning biodiversity comes from and a roundup of daily news stories.

On this week's show: What treating blindness in India can tell us about the brain and a roundup of daily news stories.

A close look at Pluto and a news roundup

On this week's show: A math app that helps math-anxious parents boost their kids' achievement and a roundup of daily news stories.

On this week's show: Designing safer jet fuels and a roundup of daily news stories.

On this week's show: 3-parent gene therapy to treat mitochondrial diseases and a roundup of daily news stories.

On this week's show: Studying elite Americans and a roundup of daily news stories.

On this week's show: How our genes influence our microbes and a roundup of daily news stories.