Forgetful fish, telescopic worms and bad air days

In a week where global heat records have melted, we find out how that can make fish life-threateningly stupid. We also dive a little deeper to find the part of the ocean where a little heat proves life-enhancing.

And we bring you boring science… no, not in that way. Find out what tree rings can tell us about ancient civilizations and past climates. Also, a new Japanese mission aims to park nice and neatly on the moon – how different is that from the famous first effort from the Apollo 11 team?

We hear about an unwelcome Delhi resident that’s taking years off locals lives – air pollution. And what is a “supervolcano” and how likely is it that one ruins our run as dominant species on this planet?

Presented by Marnie Chesterton With Chhavi Sachdev and Tristan Ahtone

Producers: Alex Mansfield, Ben Motley, Sophie Ormiston, Emily Bird and Patrick Hughes