Berly McCoy
speaker
102 appearances
7 recordings
1 series
first heard Jan 2025
last heard Jun 2025
Berly McCoy’s voice in public audio — every appearance, attributed to the second.
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Contact lenses that allow you to see infrared light.
All that on this episode of Shortwave, the science podcast from NPR.
Yeah. So scientists have known that our immune responses are different depending on what time it is and that we're actually better at mounting an immune response in the daytime. And this makes sense since we evolve to be more active in the day and so more likely to get an injury or infection.
So by day, the immune system is primed to fight potential invaders, which it does by causing inflammation and And at night, it goes anti-inflammatory to recover.
This is immunologist Jennifer Hurley at Rensselaer Polytechnic Institute. She's talking about a special immune cell called a neutrophil that's really important at fighting off infections. And she says scientists hadn't really studied circadian rhythms in neutrophils because they die so fast.
The team published their work in the journal Science Immunology.
Yeah, so Chris says they're interested in seeing if they can freeze neutrophils in the daytime state. In the case, for example, you have a really bad infection and need all hands on deck.
Kind of, but with some big caveats. So right now, these prototype lenses aren't very sensitive. They can only pick up infrared light sources in the lab, so not out in the real world from a person or a car engine. But the lenses do have some advantages. They're less bulky than night vision goggles, and they can be worn in the daytime.
And the big difference is that the contacts convert infrared into color vision instead of the mainly green or gray that night vision goggles do.
but the images they saw were blurry. And that's because the direction the infrared light was originally traveling gets lost when the contact lenses convert it to visible light. So that means making out the shape of the object also gets lost.
So the researchers coupled the contact lenses with eyeglasses, and the eyeglasses were able to focus the infrared light in a way that participants can make out letters and shapes. And they described all this in the journal Cell.
You could also use this in like a security setting, so a concert or any other crowded place. If communication systems went down, security guards could communicate with each other quickly by shining infrared light that only they could see. Or doctors could use these to see edges of tumors that have infrared dyes.
Right. So there's a house in New Jersey near an intersection with a big front lawn. And sometimes the family that lives there eats outside and that leads to crumbs. And the crumbs attract little birds that peck around at the leftovers. And those little birds attract this Cooper's hawk, which preys on them.
So Vladimir spent a couple weeks watching this and saw the hawk attack six different times. And Vladimir's theory here is that the hawk just listens for the beeping sound to know when it can launch its attack. He wrote about it in the journal Frontiers in Ethology.
Well, so people who train raptors like hawks wouldn't be surprised by this behavior.
Unfortunately, Vladimir says the crosswalk button no longer makes sounds and the family no longer leaves crumbs. So the hawk hasn't returned.
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