• Ebola: The road to zero

    Life in Ebola-affected West African countries can only return to normal when transmission of the virus ceases and cases drop to zero. Mark Honigsbaum reports on Sierra Leone’s struggles to reach zero.

  • Why do we have allergies?

    Allergies such as peanut allergy and hay fever make millions of us miserable, but scientists aren’t even sure why they exist. Carl Zimmer talks to a master immunologist with a controversial answer.

  • Genetics: Risk or destiny?

    Information is Beautiful Studio take a visual approach to exploring the complex relationships between our health, genes, lifestyle and environment.

  • Decisions on a knife-edge

    Surgery to remove the fallopian tubes but spare the ovaries of women predisposed to cancer may prevent early menopause, but is it irresponsible? Charlotte Huff explores the costs of buying time.

  • The troubled history of the foreskin

    Common in the US, rare in Europe and now championed in Africa, male circumcision is hotly debated. Jessica Wapner explores whether the gains are worth the loss.

  • Circumcising Zimbabwe

    From mass media to tribal ritual, campaigners are using circumcision to fight HIV in Zimbabwe. By Jessica Wapner.

  • Next on Mosaic

    The future of medicine is electric, reports Gaia Vince.