As President Zelensky says he won't agree to hand over Ukrainian territory, we hear about Russia's latest push to capture more of it before Friday's summit between presidents Trump and Putin.

Also on the programme:

As the fourth heatwave of the summer kicks in, we hear from the farmers crying out for water.

Why cats brains could help to find new treatments for Alzheimer's in humans.

And a new sound at The Proms: we speak to the Nigerian brothers bringing "highlife" music to the Royal Albert Hall.