NEW in Understand - The Trip
The story of psychedelics. It's a unique moment. After decades of taboo and blanket illegality, policymakers and research institutions are taking these substances seriously. As a new dawn of psychedelic treatment beckons, Tim Hayward makes a personal journey into how we got here and where this is all heading. Understand from BBC Radio 4 - unravelling the complexities of the biggest stories and subjects that really matter right now.
NEW in Understand - The Trip
The story of psychedelics. It's a unique moment. After decades of taboo and blanket illegality, policymakers and research institutions are taking these substances seriously. As a new dawn of psychedelic treatment beckons, Tim Hayward makes a personal journey into how we got here and where this is all heading. Understand from BBC Radio 4 - unravelling the complexities of the biggest stories and subjects that really matter right now.

The new government is trying to get a grip of HS2, with yet another reset. Kate challenges the new minister, Lord Hendy, on the project’s future and also considers the legacy of HS2. Will Britain ever attempt something like it again? And will its image transform again once trains are actually, finally running?
Presenter: Kate Lamble Producer: Robert Nicholson Executive Producer: Will Yates Sound Design and Mix: Arlie Adlington A Whistledown production for BBC Radio 4