Christian Graca
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christiangraca.bsky.social
Christian Graca
@christiangraca.bsky.social
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Reposted by Christian Graca
nature.com
Evolution has trapped a species of beetle in an inescapable symbiosis with the aggressive velvety tree ant.

go.nature.com/3Oa7vpM
Beetle is locked in to an eternal dance ― with an ant
Evolution has trapped a species of beetle in an inescapable symbiosis with the aggressive velvety tree ant.
go.nature.com
February 6, 2026 at 12:30 PM
Reposted by Christian Graca
happyeconews.bsky.social
A new biodegradable bamboo plastic could replace conventional plastics, offering a fully biodegradable alternative that is durable, recyclable, and easy to manufacture at scale.
Scientists Create Durable Biodegradable Bamboo Plastic That’s Stronger Than Petroleum-Based Materials | Happy Eco News
Chinese researchers created biodegradable bamboo plastic with 110 MPa tensile strength that decomposes in soil within 50 days. Published in Nature Communications (October 2025), the material outperforms...
happyeconews.com
February 3, 2026 at 5:04 PM
Reposted by Christian Graca
nature.com
Biodiversity loss is continuing at an unprecedented rate, with species becoming extinct at between 100 and 1,000 times the average pre-human, or ‘background’, rate

go.nature.com/4rxrWvn
Biodiversity conservation has an evidence problem — it’s time to fix it
Globally, more than one million species are threatened with extinction, but often interventions intended to protect biodiversity are not rooted in robust research. The field has an opportunity to change that.
go.nature.com
February 4, 2026 at 1:46 PM
Reposted by Christian Graca
sagan.bsky.social
“Exploration is in our nature. We began as wanderers, and we are wanderers still.”

— Carl Sagan
A vintage photo of Carl Sagan. He is smiling and standing with his arms open, with a celestial background.
January 25, 2026 at 2:44 PM
Reposted by Christian Graca
sagan.bsky.social
“We are, in the most profound sense, children of the Cosmos. Out of the common stuff of the universe, the stars have forged the elements of life. We are starstuff, which has taken its destiny into its own hands.”

— Carl Sagan
January 27, 2026 at 7:50 PM
Reposted by Christian Graca
quantamagazine.bsky.social
What guides a bat’s internal compass? It’s not the stars in the sky, or the Earth’s magnetic field.
How Animals Build a Sense of Direction | Quanta Magazine
Researchers documented the activity of neurons that shape directional navigation as bats explored a remote island off the coast of Tanzania.
www.quantamagazine.org
January 25, 2026 at 4:46 PM
Reposted by Christian Graca
bar44.bsky.social
Icy snow at Crater Lake National Park #Cold #Photography #CraterLake #Oregon #Snow #Trees 📷
January 25, 2026 at 5:33 AM
Reposted by Christian Graca
happyeconews.bsky.social
Sydney’s first upcycled skyscraper, built almost entirely from salvaged materials, has been named a finalist for the 2025 Earthshot Prize, redefining what sustainable architecture can look like in a circular economy.

happyeconews.com/sydneys-firs...

#happyeconews
Sydney’s First Upcycled Skyscraper Named Finalist for 2025 Earthshot Prize | Happy Eco News
Sydney’s Quay Quarter Tower, the world’s first upcycled skyscraper, has been named a finalist for the 2025 Earthshot Prize. The retrofit retained 65% of its structure, avoided 12,000 tonnes of…
happyeconews.com
January 25, 2026 at 5:02 PM
Reposted by Christian Graca
k-hermit.com
Marine life in Japan
January 23, 2026 at 11:04 AM
Reposted by Christian Graca
sagan.bsky.social
“You should not be afraid of someone who has a library and reads many books; you should fear someone who has only one book; and he considers it sacred, but he has never read it.”

— Anonymous
January 18, 2026 at 4:03 PM
Reposted by Christian Graca
quantamagazine.bsky.social
One hundred years ago, a 23-year-old postdoc named Werner Heisenberg completed a calculation that would become the heart of quantum mechanics, a radical yet stunningly accurate theory of the atomic and subatomic world. www.quantamagazine.org/its-a-mess-a...
January 19, 2026 at 4:46 PM
Reposted by Christian Graca
sagan.bsky.social
“The many sorrows of our recent history suggest that we humans have a learning disability. We might have thought that the horrors of World War II and the Holocaust were enough to inoculate us against the toxins there revealed and unleashed. But our resistance quickly fades. A new generation gladly abandons its critical and skeptical faculties. Old slogans and hatreds are dusted off. What was only recently muttered guiltily is now offered as political axiom and agenda. There are renewed appeals to ethnocentrism, xenophobia, homophobia, racism, sexism, and territoriality. And with a sigh of relief we are apt to surrender to the will of the alpha, or long for an alpha we can surrender to.” — Carl Sagan
January 17, 2026 at 5:51 PM
Reposted by Christian Graca
wildernesswatch.bsky.social
Removing ESA protections for grizzly bears isn’t about science-based “management,” it’s about systemically eradicating grizzly bears from wildlands and Wilderness to clear the way for more logging, livestock grazing, road building, and development.

wildernesswatch.salsalabs.org/oppose-grizz...
Speak up for grizzly bears!
Urge Congress to oppose the Grizzly Bear State Management Act.
wildernesswatch.salsalabs.org
January 15, 2026 at 8:20 PM
Reposted by Christian Graca
biologicaldiversity.org
“No law has done more to stop extinction than the #EndangeredSpeciesAct, which remains the gold standard for wildlife protection both in the United States and globally,” said Stephanie Kurose, deputy director of government affairs at the Center for Biological Diversity.
Built To Last | The Enduring Legacy Of The Endangered Species Act
A look back at the creation of the Endangered Species Act of 1973 and its enduring popularity and significance.
www.nationalparkstraveler.org
January 15, 2026 at 8:30 PM
Reposted by Christian Graca
floridamuseum.bsky.social
Scientist Spotted 🦏 Advait Jukar, Assistant Curator of Vertebrate Paleontology here at the Museum, quoted in a National Geographic article about woolly rhino tissue recovered from the stomachs of mummified wolf puppies in northeastern Siberia:
www.nationalgeographic.com/science/arti...
🐺🐺
Researchers recover a woolly rhino genome from inside a frozen wolf's stomach
The work marks the first time an Ice Age animal’s complete genome has been recovered from tissue preserved inside another ancient animal.
www.nationalgeographic.com
January 15, 2026 at 7:07 PM
Reposted by Christian Graca
happyeconews.bsky.social
New research shows that biodiversity improves tree defenses. The greater the variety of species in a forest, the stronger its trees become, evolving more balanced defenses against both leaf-eating insects and hungry herbivores.

happyeconews.com/biodiversity...

#happyeconews
Biodiversity Improves Tree Defenses Against Hungry Herbivores | Happy Eco News
Biodiversity improves tree defenses through associational resistance. Tree seedlings in 15-species plots resisted deer and insect attacks better than monocultures. Selective browsing on competitive…
happyeconews.com
January 13, 2026 at 5:06 PM
Reposted by Christian Graca
happyeconews.bsky.social
A group of fourteen Mexican women has completed a coastal ecosystem rehabilitation project that transformed barren wasteland into thriving mangrove forests over fifteen years.

happyeconews.com/coastal-ecos...

#happyeconews
How Community-Led Coastal Ecosystem Rehabilitation Transformed Mexico's Yucatan Coast | Happy Eco News
Mexican women's coastal ecosystem rehabilitation project transformed dead wasteland into thriving mangrove forests over fifteen years. Las Chelemeras developed innovative, low-cost techniques that…
happyeconews.com
January 8, 2026 at 5:04 PM
Reposted by Christian Graca
floridamuseum.bsky.social
Museum Resource 🐍 Florida Snake ID Guide
Easy visual ID and searchable tool for learning about our state's snakes including habitat, range, diet & lookalikes.

Featured: Eastern Hog-nosed Snake (Heterodon platirhinos)
Full info and explore more:
www.floridamuseum.ufl.edu/florida-snak...
NON-VENOMOUS
Eastern Hog-nosed Snake
NON-VENOMOUS Other common names Eastern Hognose Snake, Puff Adder, Hissing Adder, Spreading Adder, Blow Viper, Hissing Sand Snake Basic description Most adult Eastern Hog-nosed Snakes are about 20-33 ...
www.floridamuseum.ufl.edu
January 9, 2026 at 8:45 PM
Reposted by Christian Graca
biorxiv-ecology.bsky.social
Habitat and Hydrodynamics Influence Coral Reef and Seagrass Microbial and Exometabolite Dynamics https://www.biorxiv.org/content/10.64898/2026.01.12.699023v1
January 13, 2026 at 3:31 AM
Reposted by Christian Graca
biorxiv-ecology.bsky.social
Mixed-vertebrate pollination traits and pollinators of Haageocereus acranthus (Cactaceae) in a Lomas desert ecosystem of coastal Peru https://www.biorxiv.org/content/10.64898/2026.01.08.698271v1
January 10, 2026 at 2:32 AM
Reposted by Christian Graca
jesskeatingbooks.bsky.social
Love how much fun they’re having!
rvbdrm.com Ravin Boodram - Busy Moving w/o Internets @rvbdrm.com · Jan 9
BIG FIGHT AT POLAND’S WROCLAW ZOO!!!
January 9, 2026 at 9:33 PM
Reposted by Christian Graca
nhm-london.bsky.social
Time for a Good News Roundup from the Natural History Museum!

Find out some of the weird and wonderful discoveries that have been revealed in the past month (1/5) 🧵
A photo of the main entrance of the Natural History Museum, flanked by two towers, on a sunny day.
January 9, 2026 at 4:26 PM
Reposted by Christian Graca
ebpgenome.bsky.social
Why genome sequence nudibranchs? 🌈🧬
Because these vibrant sea slugs hide some of the ocean’s most extraordinary biological tricks.
From toxin evolution and chemical defenses 🧪 to symbioses, pigmentation, and extreme metabolic adaptations, nudibranch genomes reveal how life innovates in the sea. 🌊
January 9, 2026 at 5:13 PM
Reposted by Christian Graca
wcs.org
What can we learn from the bird flu outbreak that wiped out a generation of seals in Patagonia? Humanity must adopt and invest in the #OneHealth concept, write researchers from WCS Argentina. 🌎
How a Bird Flu Outbreak Wiped Out a Generation of Seals in Patagonia—and What It Means for Wildlife Conservation
observatory.wiki
January 6, 2026 at 7:14 PM
Reposted by Christian Graca
sagan.bsky.social
On this day, a child was born who left an indelible mark on human history, transforming our understanding of the world. Famous for his long hair, he unraveled the mysteries of the heavens and brought light to the world.

Happy Birthday, Sir Isaac Newton.
(Born Dec 25, 1642, Julian Calendar)
December 25, 2025 at 6:04 PM