![Frederick Balagadde: Bio-lab on a microchip](https://pi.tedcdn.com/r/pe.tedcdn.com/images/ted/164172_800x600.jpg?h=200)
Drugs alone can't stop disease in sub-Saharan Africa: We need diagnostic tools to match. TED Senior Fellow Frederick Balagadde shows how we can multiply the power and availability of an unwieldy, expensive diagnostic lab -- by miniaturizing it to the size of a chip.