Science & Society
The Smithsonian’s ‘Lights Out’ inspires visitors to save the fading night sky
The exhibition examines how light pollution harms astronomy, ecosystems and human cultures. But it also offers hope.
Featured Articles in this Issue
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Cover Story
A massive cavern beneath a West Antarctic glacier is teeming with life
A subglacial river has carved out the cavern beneath the Kamb Ice Stream, a West Antarctic glacier, and may be supplying nutrients necessary for life.
Reviews & Previews
Science Visualized
Neuroscience
Scientists have mapped an insect brain in greater detail than ever before
Researchers have built a nerve cell “connectivity map” of a larval fruit fly brain. It’s the most complex whole brain wiring diagram yet made.
Notebook
Anthropology
Two scientists’ trek showed how people of Chaco Canyon may have hauled logs
By carrying a log with the aid of head straps called tumplines, the duo demoed how people may have hauled timbers to Chaco about 1,000 years ago.
Features
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Marie Tharp’s groundbreaking maps brought the seafloor to the world
In part because of her gender, Tharp was the right person in the right place at the right time to make the first detailed maps of the ocean’s bottom.
More Stories from the April 22, 2023 issue
- Neuroscience
Your brain wires itself to match your native language
MRI scans of nearly 100 native speakers of either German or Arabic revealed differences in how the language circuits of their brains are connected.
- Health & Medicine
The antiviral drug Paxlovid reduces the risk of getting long COVID
In a study of U.S. veterans’ health records, the drug lowered the odds of developing 10 of 13 long-term health problems following a COVID-19 infection.
- Earth
A moon-forming cataclysm could have also triggered Earth’s plate tectonics
Deeply buried remnants of a hypothetical planet that slammed into Earth 4.5 billion years ago might have set subduction into motion.
- Agriculture
Martian soil may have all the nutrients rice needs
Experiments hint that in the future, we might be able to grow the staple food in the soils of the Red Planet.
- Astronomy
The biggest planet orbiting TRAPPIST-1 doesn’t appear to have an atmosphere
TRAPPIST-1b is hotter than astronomers expected, suggesting there’s no atmosphere to transport heat around the planet.
- Paleontology
310-million-year-old fossil blobs might not be jellyfish after all
An ancient animal called Essexella may have been a type of burrowing sea anemone, a new study proposes.
- Astronomy
The mystery of Christiaan Huygens’ flawed telescopes may have been solved
The discovery of Saturn’s largest moon, Titan, may have come despite its discoverer, Christiaan Huygens, needing eyeglasses.
- Health & Medicine
U.S. cases of a deadly fungus nearly doubled in recent years
Though numbers are still small, clinical cases of Candida auris in the jumped 95 percent from 2020 to 2021, a CDC survey finds.
- Space
A crucial building block of life exists on the asteroid Ryugu
A sample from Ryugu collected by Japan’s Hayabusa2 spacecraft contains uracil, a component of RNA, which is found in all living cells.
- Astronomy
A neutron star collision may have emitted a fast radio burst
Astronomers spotted both a fast radio burst and gravitational waves from a cosmic smashup in the same part of the sky and at about the same time.
- Plants
Stressed plants make ultrasonic clicking noises
Tomato and tobacco plants emit high frequency sounds, which could one day find a use in agriculture, as a way to detect thirsty crops.
- Animals
Volcanic sulfur may make barn owls grow redder feathers
Barn owls on volcanic islands tend to have redder plumage than those on nonvolcanic islands, possibly due to an influx of sulfur in the environment.
- Environment
Satellite imagery reveals ‘hidden’ tornado tracks
Twisters that churn over barren landscapes leave scars that are invisible to human eyes but are detectable with infrared light.
- Health & Medicine
A hormone shot helped drunk mice sober up quickly
Drunk mice injected with the hormone FGF21 woke up and regained their balance faster than inebriated mice that did not receive the shot.
- Genetics
DNA from Beethoven’s hair hints at what killed the composer
Many historians suspect Beethoven died from liver failure. A new analysis shows he had a heightened genetic risk for liver disease, researchers say.
