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.

Costs began to truly spiral out of control. In search of the culprit, Kate goes through the mess HS2 made of some its largest contracts. Much of HS2 was being built by massive consortiums of engineering firms. A short lived effort to unload the project’s risk to these firms saw costs continue to rise beyond the original estimates. And, as the price increased, politicians faced further pressure to curtail the project.
Presenter: Kate Lamble Producer: Robert Nicholson Executive Producer: Will Yates Sound Design and Mix: Arlie Adlington A Whistledown production for BBC Radio 4