Plus: New 3D microscope tech, satellites polluting our views, and drug-resistant pathogens.
 
 

ON THE MENU

Good morning!

 

If you want potatoes in your Mars cuisine, you may be out of luck, but rice is likely to grace the menu. Crop scientists reported that rice can grow in Martian soil with manageable genetic modifications. Plus, on the prep side, “You just peel off the husk and start boiling.” So read on about life’s chemistry, beetle butts, and pesky pathogens.

 
Fast Fact
 

QUICK BITE

A flight to Titan, Saturn’s big icy moon with a thick atmosphere, is just several years away. NASA plans to send the Dragonfly drone in 2027. With its low gravity, Titan is a great place to zip around. So, the Dragonfly will collect samples and analyze them with its on-board mass spectrometer, hoping to find life’s organic molecules and understand their “distribution in different surface environments,” says planetary scientist Melissa Trainer.

 
Grab Bag
 

GRAB BAG

MICROSCOPY

3D movies

New technology stitches microscopic videos together for 3D views

Microscopes already give us amazing perspectives on life, like THESE photos that include a pregnant flea and dinosaur bone crystals. Can it really get better than that? Robert Hooke would be entirely bowled over at the transformation from his microscope to the electron microscopy (SEM) of today with magnifications as high as 1 million. But it gets even better.

 

A recent paper reports on a new 3D video microscopy technique that views movements at 230 frames/sec, which requires pushing more than 5 gigapixels of data/sec. The researchers achieved this milestone with an array of 54 video cameras synchronized to produce a 3D visualization, modeled off an array of synched grad student cell phone cameras.

 

Explains study author Jennifer Bagwell, "With the 3D and fluorescent imaging capabilities of this microscope, it could change the course of how a lot of developmental biologists do their experiments,” like the studies of zebra fish developing. Prior, they’d be knocked out with drugs to slow them down enough for filming, but now the Multi Camera Array Microscope can image them swimming freely.

 

SPACE TRASH

Outshining the stars

Satellites are threatening our views of the night sky

It’s more than a bit ironic that a big cluster of satellites is referred to as a mega-constellation, since their presence obfuscates our observations of actual constellations of stars. In a set of recent publications like this one, astronomers from many nations voiced their shared concerns that the night sky is getting “spoiled” by satellites. 

 

Already surfacing as a problem was space debris, with thousands of pieces in orbit. Added to that worry are now the fleets of low-orbit satellites like Starlink. The light emitted from cities had already been blotting out the planet’s skies for almost 200 years, but it doesn’t shine a candle to the growing glow from satellites. 


And it’s not just scientific study of the cosmos that’s compromised. Explains astronomer Aparna Venkatesan, "Space is our shared heritage and ancestor—connecting us through science, storytelling, art, origin stories and cultural traditions—and it is now at risk." “Goodnight Moon” may need a title revision to “Goodnight Satellites.”

 

INSECT BEHAVIOR

Drinks in the rear

Scientists figure out how beetles suck water into their butts

Animals that live in dry environments have some wonky ways of getting water, from camels sucking in their lips to thorny devils soaking up water with their feet to bats using their tongues like conveyor belts. For insects, it’s not uncommon to drink through an entirely different orifice — their butts. 

 

Now, a new study shows how beetles extract water into their butts for other parts of the body that need it. Beetles were known to retain water from their poop when it passes through the rectum, as well as harvest water from air. Researchers examined the genetics of flour beetles and uncovered a gene that codes for special “leptophragmata” rectum cells, which control water balance. 

 

Says study author Kenneth Veland Halberg, "A beetle can go through an entire life cycle without drinking liquid water," because they extract it from their food and from moisture in the air. Handy skill for an arid life, arguably rivaling the rear end adaptation of the giant water bug that breathes through its butt tubes.

 
In The News
 

IN THE NEWS

  • U.S. cases of a deadly fungus nearly doubled in recent years.

  • Tick-borne parasite is spreading in the Northeast, CDC says.

  • Scientists warn of rise in potentially fatal bacterial infection due to global warming.

 
The Full Scope
 

THE FULL SCOPE

We’ve all lost sleep over pathogens during the past few years. COVID-19 precipitated enough worry to increase the prevalence of anxiety by 25%, according to global data from the World Health Organization.

 

Although monkeypox caused less worry than COVID-19 in some populations, in others it was associated with mental health issues, including depression and anxiety.

 

When you layer monkeypox on top of COVID-19, you’ve got a bigger public health emergency, which our U.S. Department of Health and Human Services reminds us can bring about lots of stress symptoms like drinking, smoking, taking drugs, and generally feeling helpless.

 

Suffice it to say that pathogens have been in the forefront of our minds of late.The recent blast in the news about over the counter eyedrops harboring a drug-resistant bacteria doesn’t help the mood.

 

The recalled drops include multiple brands, which apparently were not protected with sufficient preservatives or suitable sealing. Infection with the bacteria — Pseudomonas aeruginosa — can have consequences as dire as death and blindness. Or you might just need to have your eyeball surgically removed. Seriously? Can we end this story now?

 

Well, not quite yet, because other pathogens don’t get as much press, but are no less worthy of our attention. For example, data from the past decade shows a deadly fungus spreading in health care settings in the U.S. Infections with Candida auris have doubled. Some people remain carriers, but for others the yeast spreads through the bloodstream and becomes life-threatening. The antifungal drugs are not working well on new, resistant infections. Says epidemiologist Meghan Lyman, “We’re obviously very concerned.”

 

And healthcare settings are not the only conduits for spread of pathogens. Have you protected yourself from babesiosis? (nope, not an ailment limited to “babes”). It’s caused by a diminutive parasite — Babesia microti — that’s spread by ticks. Healthy people may be asymptomatic, but others suffer a flu-like infection can get life-threatening. So, despite its cute name, there’s nothing cute about babesiosis.

 

CDC parasitologists advise that, "Persons spending time outdoors in states with endemic babesiosis should practice tick bite prevention, including wearing long pants, avoiding underbrush and long grass, and using tick repellents."

 

Infections in general are expected to continue to rise with global warming. A recent study shows that infections from an ocean bacteria called Vibrio vulnificus (not such a cute name) are becoming more common and geographically widespread. When you swim on the East Coast, for example, the bacteria can enter an open wound and cause an infection with a 1 in 5 chance of death. What?! It’s called “flesh-eating” because of the way it corrodes human flesh. After Hurricane Ian, Florida saw a spike in flesh-eating bacteria cases nourished by the sewage inflows to the sea.

 

If you’re not concerned yet about pathogens, the CDC’s Weekly Morbidity and Mortality Weekly Report (MMWR) detailing all the latest healthcare challenges is HERE, for some uplifting reading.

 
NerdSnack Picks
 

NERDSNACK PICKS

  • The Simpsons has been subtly recreating a bunch of historical photos—how many do you recognize?
  • Scientists can’t decide if this rare goblin shark sighting was real or a plastic toy.
  • “Absolutely gobsmacking” photos of the sun in all its glory.

  • A Canadian pianist turned the classic iPhone alarm into a heartwarming ballad.

 

COMING UP

Next time we’ll get duped by some deception and other April foolery.

 

MEME OF THE WEEK

Written by Devin Reese, Edited by Jake Currie

 

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