• 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.

  • Where there’s smoke

    A haze has periodically wafted over South-east Asia for 20 years. But despite rising public health concern, the problem remains as opaque as the smoke itself, Mike Ives reports.

  • Death in the Outback

    Healthcare in Australia’s Aboriginal communities is hindered by a long history of racial discord between very different cultures. Georgina Kenyon discovers the story of one young woman who died in the 1980s, and asks whether anything has changed since.

  • Colour to dye for

    The basic chemistry of hair dyes has changed little over the last century, but what do we know about the risks of colouring our hair, and why do we do it? Rebecca Guenard finds out.

  • Why do we dye?

    Finding out what drives so many of us to colour our hair.

  • Down the drain

    What do we know about the environmental impact of hair dye chemicals?

  • Next on Mosaic

    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.