On this week's show: Challenges and hope for science in Iran and a roundup of daily news stories.

On this week's show: The origin of moralizing gods, replicating 100 psychology experiments, and a roundup of daily news stories.

We are the superpredators and a daily news roundup

On this week's show: How baby marmoset monkeys develop their calls and a roundup of daily news stories.

On this week's show: new vaccines against ebola and a roundup of daily news stories.

On this week's show: organic compounds on Comet 67P and a roundup of daily news stories.

On this week's show: Ancient DNA and a roundup of daily news stories.What we can learn about the ancient world from ancient DNA and a daily news roundup

Soft robots that run on combustion and a daily news roundup

On this week's show: Behind the scent of a rose and a roundup of daily news stories.

On this week's show: Compressing hydrogen into a metallic state and a roundup of daily news stories.