Engineers find new way to target cancer

For ten years, it's been known that RNA interference could potentially kill cancer by shutting off malfunctioning genes - but there's been no  efficient way to deliver the RNA.

DARPA wants to replace antibiotics with nanoparticles

The Defense Advanced Research Projects Agency - aka DARPA - wants to replace outdated antibiotics with nanoparticles capable of targeting unknown, evolving and genetically engineered bioweapons.