• Exploding the calorie

    Why the calorie is broken

    Calories consumed minus calories burned: it’s the simple formula for weight loss or gain. But dieters often find that it doesn’t work. Cynthia Graber and Nicola Twilley of Gastropod investigate.

  • Coming up on Mosaic: Rats that sniff TB and dogs that smell cancer

    Emma Young asks if medical detection animals are a real thing.

  • Illustration of a man broken into parts next to a CND symbol

    Suicide of the Ceasefire Babies

    In Northern Ireland, more people took their own lives in the 16 years after the Troubles than died during them. Why? Lyra McKee finds out.

  • Psychedelic drugs MerijnHos Mosaic

    Psychedelic therapy

    Notoriously illegal and synonymous with hedonism, LSD and ecstasy started life as aids to psychotherapy. Sam Wong meets the band of psychiatrists who are looking to reclaim them for medicine again.

  • On menopause

    There are a few things science doesn’t know about the menopause: what it’s for, how it works and how best to treat it. Approaching her second – yes, second – menopause, Rose George finds herself with more questions than answers.

  • Chronic fatigue syndrome: Building bridges

    Fighting over fatigue

    How can you do medical research on chronic fatigue syndrome when divisions between patients, doctors and researchers are almost as chronic and painful as the disease itself? Virginia Gewin reports on new hopes of reconciliation.