On Dear Science today we talk about ancient earth rocks found on the moon, the rise in foetal genetic testing and the (probable) end of the Opportunity Rover on Mars.

Marama Davidson talks to Hamish Webber about international spying.

And we hear a long form piece on a film made by artist Shakaiah Perez for a Royal Academy of Arts exhibition, and this discussion goes into issues of representation, activism art and decolonisation.