• 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?

  • Coming up on Mosaic

    In the 1970s, radical scientists thought they could change the world – if they could change science first. As told to Alice Bell.