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            Introducing The Trip—The Trip
1/10 Tim Hayward looks at the science, history - and future - of psychedelics.
            10. The Bear Trap—Derailed: The Story of HS2
10/10 Kate asks: What next for HS2?
            9. You Can Do One—Derailed: The Story of HS2
9/10 Rishi Sunak is faced with the decision of what to do about HS2's future.
            8. Help I’m Under a Digger—Derailed: The Story of HS2
8/10 HS2 begins building, and environmental protestors make their presence felt
            7. Gold Plated—Derailed: The Story of HS2
7/10 HS2's contracts with major firms become a new focus for critics.
            6. The Only Friend that Mattered—Derailed: The Story of HS2
6/10 As HS2 faces fresh threats, a new prime minister steps in.
            5. Worry About the Detail Later—Derailed: The Story of HS2
5/10 Dissent grows within HS2 itself.
            4. Well Done Geoffrey—Derailed: The Story of HS2
4/10 Costs mount as compromises with protesting locals are struck
            3. That can’t be right—Derailed: The Story of HS2
3/10 Protest groups begin to organise as the line's route is announced.
            2. Mutually assured exaggeration—Derailed: The Story of HS2
2/10 HS2 makes its case to ministers, but fault lines rapidly emerge.