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Olivia Hewitt

@oliviahewitt.bsky.social
97 followers 275 following 17 posts

The Olive 🙃 Science writer & Biologist Marine sponge advocate Proponent of the small things - from inverts to microbes!

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Olivia Hewitt @oliviahewitt.bsky.social · 07/09/2026
It's always a pleasure to write about my favourite animal — yes, sea sponges! 🧽 They might look a little strange & lack any kind of brain, but they sure can do wild things. Check out my piece for @aunz.theconversation.com to find out why metamorphosing sponge larvae love sunset! 🌅
theconversation.com
How brainless sea sponges use sunset as a cue to prepare for metamorphosis
Sea sponges are some of the world’s simplest animals – but even so, the rhythm of night and day kicks off a crucial stage of their life cycle.
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Reposted by Olivia Hewitt
MBARI @mbarinews.bsky.social · 21/08/2026
Adding some deep-sea wonder to your scroll💙✨️⁠ ⁠ This siphonophore, Erenna richardi, can be identified by the massive clusters of tentilla (the side branches of the tentacle) at the end of the tail (siphosome). In Monterey Bay, this species has been observed at average depths of about 1,100 meters.
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Reposted by Olivia Hewitt
C&EN (Chemical & Engineering News) @cenmag.bsky.social · 16/08/2026
These psychedelic swirls resemble a brain, but in fact, they were taken just in front of a brain—in a mouse’s nose to be exact. Read more: cen.acs.org/analytical-c... #CENChemPics by David Brann/Datta Lab. #chemsky 🧪
A slice of a mouse epithelium shows the swirls and folds that are inside the organ in blue and violet. Many of the swirls are lined with green regions or tiny blobs of green against a dark field.
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Olivia Hewitt @oliviahewitt.bsky.social · 22/04/2026
Excited to share my piece for @birdlifeoz.bsky.social on the Bush Stone-curlew! Brisbane's haunting nighttime resident — from its eerie call to gangly chicken legs, I take a look at its biology, threats & conservation www.calameo.com/read/0081897... #biology #birds #ecology #scicomm #conservation
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Olivia Hewitt @oliviahewitt.bsky.social · 15/03/2026
What if 'brain chemicals' are used by animals with no brain at all? My new piece for @nautil.us explores neurotransmitters' surprising roles beyond the brain - in our own bodies, brainless animals, plants & even microbes! nautil.us/the-secret-l... #Neuroscience #Neurotransmitters #Evolution #Science
nautil.us
The Secret Life of Neurotransmitters
The Secret Life of Neurotransmitters: Think beyond the brain
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Olivia Hewitt @oliviahewitt.bsky.social · 10/11/2025
Oxygen makes Earth special. It's seen as the secret ingredient that allowed life here to thrive. But what if it didn't? What if oxygen actually made things a whole lot harder? sciencespectrumu.com/why-oxygen-d... #Scicomm #Biology #Evolution #Life #Science #Geology #ScienceCommunication #Oxygen
sciencespectrumu.com
Why Oxygen Doesn’t Mark the Dawn of Complex Life
It was the beginning of a major new problem
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Olivia Hewitt @oliviahewitt.bsky.social · 30/10/2025
How many ways are there to wear a sea sponge? Check out these dolphins for some fun fashion! #Ocean #Dolphins #Seasponge #environment #wildlife #VitaminSea www.abc.net.au/news/2025-10...
abc.net.au
Male dolphins spotted donning sea-sponge wigs to attract females
Scientists observe male humpback dolphins parading sea sponges on their heads to impress females off Western Australia's northern coast.
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Olivia Hewitt @oliviahewitt.bsky.social · 30/07/2025
90% of marine life lives where the light reaches- so what happens when it begins to fade? sevenseasmedia.org/ocean-darken... @sevenseas-media.bsky.social #scicomm #ocean #climatechange #marine #conservation #marineconservation #environment #underwater #marinelife #oceanaction #saveourseas
sevenseasmedia.org
Ocean Darkening is Causing Marine Habitats to Shrink
90% of marine life lives where the light reaches— so what happens as it begins to fade? Just below the ocean’s surface, the sun’s rays break to illuminate seemingly infinite deep blue— here, sunlight ...
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Olivia Hewitt @oliviahewitt.bsky.social · 17/07/2025
90% of marine life lives where the light reaches- so what happens when the light begins to fade? curlews-eye.webflow.io/posts/ocean-... #scicomm #ocean #ecology #climate #climatechange #marine #conservation #marineconservation #environment #science #underwater #marinelife #oceanaction #saveourseas
curlews-eye.webflow.io
Ocean darkening is causing marine habitats to shrink
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Olivia Hewitt @oliviahewitt.bsky.social · 29/05/2025
Ancient walrus DNA from Arctic ivory relics holds secrets of landmark moment in human history medium.com/illumination... #sciencecommunication #science #scicomm #AncientHistory #archaeology #Greenland #Arctic #history #walrus #ArcticTrade #arcticcircle #Genetics #biology #Humans #vikings #inuit
medium.com
When and where did the first humans meet ‘full circle’ around the world?
Answers have been found within the ivory teeth of ancient walrus DNA
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Olivia Hewitt @oliviahewitt.bsky.social · 17/05/2025
Check out how sea sponges can uncover mysteries of the deep and help safeguard unexplored wonders of the #Ocean www.currentconservation.org/mysteries-of... #Scicomm #Seasponge #deepsea #conservation #sciencecommunication #eDNA #marinebiology #Porifera #sponge #CurrentConservation #Biology #coral
currentconservation.org
Mysteries of the deep sea captured by the mouth of a sponge | Current Conservation
Current Conservation Mysteries of the deep sea captured by the mouth of a sponge
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Olivia Hewitt @oliviahewitt.bsky.social · 19/03/2025
Oxygen's untold story... medium.com/write-under-... #Poetry #Scicomm #Earth #evolution #poem #Ode #Nature #Life #Oyxgen #sciencecommunication #antioxidant #detox #verse #VerseOfTheDay #WriteUnderTheMoon
medium.com
An Ode to Oxygen
The untold story
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Reposted by Olivia Hewitt
Science Friday @scifri.bsky.social · 06/02/2025
Scientists have discovered how to attach bioluminescence to a key piece of cellular machinery. In today's episode, how “RNA lanterns” could help us understand how viruses and memories work. Listen here🎧: buff.ly/4aSeV8I
Researchers made “RNA lanterns” by tagging mouse RNA with the enzyme that makes fireflies glow.
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Olivia Hewitt @oliviahewitt.bsky.social · 06/02/2025
Well this is very exciting!
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Olivia Hewitt @oliviahewitt.bsky.social · 31/01/2025
Most of us eat too much salt that's hidden in processed foods. If food manufacturers switched to potassium salt we could all better protect our health & manufacturers still protect their profit margins with potassium-salty foods instead #Salt #SciComm #WHO #Health #processedFood #food #potassium
theconversation.com
Why the WHO has recommended switching to a healthier salt alternative
It’s a positive step, but there will be a few challenges to realising the full benefits to public health.
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Reposted by Olivia Hewitt
Prof Sam Illingworth @samillingworth.com · 28/01/2025
Tired of being asked to be a 'Net Zero Hero'? 🦸‍♂️ My new @uk.theconversation.com article explains why focusing on individual action can distract from other climate solutions. 🌎 It's time for systemic change! ➡️ 🔗 theconversation.com/you-dont-hav... #ClimateAction #ClimateChange 🧪 #SciComm
theconversation.com
You don’t have to be a net zero hero – how focus on personal climate action can distract from systemic problems
Shifting the blame for the climate crisis onto individuals hides the larger issue. True progress demands systemic accountability from governments and corporations.
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Olivia Hewitt @oliviahewitt.bsky.social · 23/01/2025
During Earth's last runaway global-scale pollution, there was an entire ecological shift in the biology of Life... #scicomm #sciencecommunication #oxygen #antioxidants #freeradicals #biology #environment #evolution #Earth #pollution #climatechange #gases #chemistry
curlews-eye.webflow.io
Oxygen – Earth's first great poisonous polluter
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Reposted by Olivia Hewitt
The Guardian @theguardian.com · 20/01/2025
Australian oysters’ blood could hold key to fighting drug-resistant superbugs, researchers find
theguardian.com
Australian oysters’ blood could hold key to fighting drug-resistant superbugs, researchers find
Protein found in Sydney rock oysters’ haemolymph can kill bacteria and boost some antibiotics’ effectiveness, scientists discover * Follow our Australia news live blog for latest updates * Get our breaking news email, free app or daily news podcast…
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Charles Thistlethwaite @charlest.bsky.social · 21/01/2025
Research by Holli-Anne Passmore, an associate professor of psychology at Concordia University of Edmonton, indicates that simply noticing nature, even briefly, significantly enhances positive emotions such as joy, connectedness, hope, and gratitude. www.cbc.ca/radio/thecur...
cbc.ca
Need a simple way to destress? Stop and notice nature, experts say | CBC Radio
On those dreary winter days, it's easy to feel low, but experts recommend a simple way to boost your mood: take notice of nature. Doing so can spark moments of joy called "glimmers."
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Olivia Hewitt @oliviahewitt.bsky.social · 16/12/2024
Yes they're real animals, not plants, and not square-shaped creatures living in giant pineapples under the sea medium.com/@oliviahewit... #seasponge #naturalsponge #biology #Scicomm #scienceblog #spongebob #bathsponge #science #ecology #showersponge #loofah #medium
medium.com
Secrets of the Common Bath Sponge
Are you someone that uses a loofah to wash with? Proclaiming about their wholesome exfoliating benefits. Or maybe the exotic pouf or humble…
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Reposted by Olivia Hewitt
Popular Science @popsci.com · 12/12/2024
And so WHAT if we did drink beer and eat refried beans all day, anyway?? It's FINE we're fine www.popsci.com/technology/a...
popsci.com
AI thought knee X-rays could tell if you drink beer and eat refried beans
'Not all patterns they identify are meaningful or reliable.’
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Olivia Hewitt @oliviahewitt.bsky.social · 11/12/2024
Travelling this holiday season? Meet the Caribbean Spiny Lobsters who prefer to #Conga their way to escape the weather! #lobster #conga #migration #biology #scicomm #conservation #aquaculture #travel #partybus #ecology
curlews-eye.webflow.io
Conga Like a Lobster!
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Olivia Hewitt @oliviahewitt.bsky.social · 03/12/2024
Antioxidants get rid of free radicals. Right... but what is a free radical? curlews-eye.webflow.io/ask-evie-blo... @curlewseye.bsky.social #antioxidants #redox #blog #scicomm #science #explainer #health #sciencecommunication #oxygen #biology #biochemistry #freeradical #bojo #boris
curlews-eye.webflow.io
What are free radicals?
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Olivia Hewitt @oliviahewitt.bsky.social · 03/12/2024
Pleased to share my new blog -Curlew's Eye- covering #Biology, #Evolution & #Life. Named after a curiously, creepy looking bird & its large, watchful eye! Find out more from @curlewseye.bsky.social #science #scicomm #sciencecommunication #Zoology #scienceblog #sciencewriting #writing #blog
curlews-eye.webflow.io
Neighbourhood watch - A Curlew Calls
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