It’s time for “Nerd News,” covering the most important news for your brain you may have missed over the last few days.  Here’s a quick rundown of this week in science . . .

1.  A new study has revealed that the availability and variety of fast-food restaurants along your commute route has a direct association with your weight.  Which means, the more opportunities you have for quick, unhealthy meals, the higher your weight will be.

2.  A researcher at the University of Illinois conducted a study on 3,500 adults and found that those who are the most optimistic tend to sleep better.  The study showed that optimists are able to, quote, “reduce worry and ruminative thoughts when they are falling asleep.”

3.  Researchers are closer to figuring out how to see around corners and take photos of what’s there.  They basically bounce lasers around stuff, then analyze the beams that bounce back and use that information to reconstruct what’s there.

4.  Scientists in Korea and the United States have invented a device that can control your brain circuits through an implant controlled by a smartphone.  This could dramatically improve conventional methods of drug delivery, by making it significantly less bulky and wireless.  And in doing so, hopefully, speed up what we know about Parkinson’s, Alzheimer’s, depression, and pain.