Mosaic

The startling discovery that hundreds of thousands of Brazilians have a genetic mutation that undermines their ability to resist cancer is now leading to new ways to treat the disease.

Telling cancer from non-cancer is tough for brain surgeons. Scorpions, Amazon.com and the legacy of a dying girl might change that.

The WHO wants to eliminate rabies in Asia by 2020. But how, when rabid dogs are running India ragged?

Losing your sense of smell takes away more than scents and flavours – it can fundamentally change the way you relate to other people.

Test-tube babies, surrogates, single parents, gay fathers – the modern era is redefining what a family is. Linda Geddes finds out if the kids are alright.

Radioactivity stirs primal fears in many people, but  an undue sense of its risks can cause real harm.

An outbreak of cholera in Haiti that began in 2010 is still killing people. Why have attempts to get it under control failed?

Hard to diagnose, with an unknown cause, Kawasaki disease has been puzzling doctors for 150 years. Jeremy Hsu explores what we know, and still don’t know, about this troubling childhood […]

At 42, Nic Fleming discovered that he has never really seen in three dimensions. Can new therapies based on video games fix his lazy eye and give him his first […]