Bringing aromas indoors with the help of chemical products — yes, air fresheners, wax melts, floor cleaners, deodorants and others — rapidly fills the air with nanoscale particles that are small enough to get deep into your lungs, Purdue engineers have found over a series of studies.

The MiFly system enables a drone to determine its precise position space — including its six degrees of freedom — in indoor, dark, or low-visibility environments using radio frequency waves. 

Imagine seeing a furry, four-legged animal that meows. Mentally, you know what it is, but the word “cat” is stuck on the tip of your tongue. 

This phenomenon, known as Broca’s aphasia or expressive aphasia, is a language disorder that affects a person’s ability to speak or write. While the current go-to treatment is speech therapy, scientists at Northwestern University are working toward a different, possibly more effective treatment: using a brain computer interface (BCI) to convert brain signals into spoken words. In a new study, Northwestern Medicine scientists have, for the first time, identified specific brain regions outside the frontal lobe — in the temporal and parietal cortices — involved in the intent to produce speech. This opens the door to one day using a BCI to treat Broca’s aphasia.