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David Garrison

@ridingmybike.bsky.social

377 followers 167 following 134 posts

Publisher of bioGraphic magazine, formerly of Hakai Magazine. Cyclist (road, mtn, cross, commuter), parent, and some other stuff. Voted "best human ever" by my pet rock. (My profile pic is my dog, not me! Just in case you weren't sure.)

Posts Replies Media

Reposted by David Garrison

Ashley Braun @ashleybraun.bsky.social · 13/10/2026

Greener cities literally have healthier, longer-lived people. Want to know how many lives America’s urban forests are saving? 🌳 🏙️ Read my latest story 👇

Reposted by David Garrison

bioGraphic @biographic.bsky.social · 13/10/2026

We've long known that city dwellers who live near trees have better health outcomes. But until now, few studies have measured the magnitude of these benefits in “health, deaths, or dollars." @ashleybraun.bsky.social reports on new research that quantifies the benefits of urban forests:

Trees as Public Health Infrastructure | bioGraphic

New research shows that meeting tree canopy goals could prevent more than 67,000 premature deaths in the United States.

Reposted by David Garrison

Emma Smith @3mm4sm1th.bsky.social · 06/10/2026

In my latest for @biographic.bsky.social, I reported on a Southeast Asian mite that is spreading into parts of Europe, threatening honey bees. Last summer, a cargo ship carrying mite-infested bees was headed toward the U.S. when officials intercepted the swarm. biographic.com/a-mite-on-a-...

A Mite on a Bee on a Ship on the Sea Spells Trouble | bioGraphic

Pollinator pathogens are spreading through international trade, threatening both agriculture and wild ecosystems.

Reposted by David Garrison

bioGraphic @biographic.bsky.social · 05/10/2026

In the southwestern U.S., tamarisk is considered a villain: a water-guzzling invasive tree sucking rivers dry. But 25 years after a beetle was released to knock tamarisk back, water levels still haven't risen--and riparian wildlife is still struggling. Why?

The Trouble with Tamarisk | bioGraphic

Twenty-five years ago, land managers unleashed a beetle to control an invasive tree sucking rivers dry. But water levels haven’t risen—and the real villains are still causing trouble.

Reposted by David Garrison

bioGraphic @biographic.bsky.social · 01/10/2026

How do fat bears get so fat? 🐻 Catching salmon requires skill, luck, and years of practice. But research shows that the real secret to bulky bears is a varied diet.

The Art of the Catch | bioGraphic

To bulk up for winter hibernation, Alaska’s brown bears employ a range of techniques for snaring salmon.

Reposted by David Garrison

Julia Kane @juliakane.bsky.social · 24/09/2026

This story is funny, moving, and hopeful! I really enjoyed it.

Reposted by David Garrison

Krista Langlois @cestmoilanglois.bsky.social · 24/09/2026

Best headline ever, courtesy of @annieroth.bsky.social

When it Comes to Frog Sex, Teamwork Makes the Dream Work | bioGraphic

New science on gray foam-nest tree frogs hints at the evolutionary benefits of multiple sexual partners.

Reposted by David Garrison

Ben Goldfarb @bengoldfarb.bsky.social · 24/09/2026

"If eco-social anomie describes a societal forgetting, dam removal achieves the opposite—a 'collective remembering' that unshifts our baselines." This week @biographic.bsky.social published my story on the rewilding of New England rivers, a mill dam at a time. (1/6) biographic.com/death-by-a-t...

Death by a Thousand Dams | bioGraphic

Tens of thousands of small barriers hamper fish recovery in the northeastern United States. But while the demolition of big dams out west gets the most attention, a similar revolution is revitalizing ...

Reposted by David Garrison

Julie Lockwood @lockwoodlab.bsky.social · 22/09/2026

Really lovely article about the return of New England rivers.

Reposted by David Garrison

Jude Isabella @judeisabella.bsky.social · 22/09/2026

Love a @bengoldfarb.bsky.social story!

Reposted by David Garrison

bioGraphic @biographic.bsky.social · 21/09/2026

bioGraphic isn’t owned by a billionaire or backed by a media conglomerate—we’re independent. And last year, a quarter of our funding came directly from reader contributions. Will you help us raise $20,000 by October 2? Every bit helps.

Support Us | bioGraphic

It’s never been more important to have reporting like the kind we publish at bioGraphic—deep, nuanced, trustworthy stories that inspire people to reconnect with nature. The money we raise goes directl...

Reposted by David Garrison

Brooke Jarvis @brookejarvis.bsky.social · 15/09/2026

Very relieved to have bioGraphic still in the world!

Reposted by David Garrison

bioGraphic @biographic.bsky.social · 15/09/2026

We're back from our hiatus with a new logo, newsletter, website, and even a new color palette! AND a fresh story by fearless editor @judeisabella.bsky.social! We hope you'll check us out, share with your friends, and consider supporting independent journalism about biodiversity & conservation 🧪

Home | bioGraphic

Our newsletter Subscribe to bioGraphic’s weekly newsletter and never miss a story! From the archives Special series

David Garrison @ridingmybike.bsky.social · 04/09/2026

I ♥️ this. I flowed directly down the left hand side. 🇨🇦

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Reposted by David Garrison

Jude Isabella @judeisabella.bsky.social · 03/09/2026

In December 2025, I traveled to Patagonia for @biographic.bsky.social with photojournalist Kat Pyne to report on Patagonia's giant bumblebee. Matías Avramow, a journalist with @lanacioncom.bsky.social joined us in the field. A grant from the @pulitzercenter.org allowed us to make this trek!

David Garrison @ridingmybike.bsky.social · 16/07/2026

Just awful. My heart goes out to the people and communities affected. 💔

David Garrison @ridingmybike.bsky.social · 11/07/2026

Classic Canadiana 🍁

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Reposted by David Garrison

Claudia Geib @cgeib.bsky.social · 01/07/2026

My latest for @biographic.bsky.social! Despite ship traffic, trash, runoff, sediment, & roasting water temps, corals are thriving in the port of Miami. How do they do it? Researchers are trying to find out, and see if these resilient traits can be passed on: www.biographic.com/the-corals-t...

The Corals That Shouldn’t Exist - bioGraphic

Beneath Miami’s skyscrapers, a colony of corals defies expectations—and offers insight into other undersea urban ecosystems.

Reposted by David Garrison

David Shiffman, Ph.D. 🦈 @whysharksmatter.bsky.social · 30/06/2026

The Corals That Shouldn’t Exist - bioGraphic

The Corals That Shouldn’t Exist - bioGraphic

Beneath Miami’s skyscrapers, a colony of corals defies expectations—and offers insight into other undersea urban ecosystems.

Reposted by David Garrison

cara giaimo @cjgiaimo.bsky.social · 26/06/2026

are you interested in toad calls, cemeteries, walking around at night, and/or what the wood frog has in common with Jesus Christ? you can learn about all these things and more in my new essay for @biographic.bsky.social: www.biographic.com/listening-fo...

Listening for Life Among the Dead - bioGraphic

A local chapter of a national frog survey convenes at a storied Massachusetts cemetery.

David Garrison @ridingmybike.bsky.social · 24/06/2026

No notes

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Reposted by David Garrison

Elise Cutts @elisecutts.bsky.social · 23/06/2026

Sad to hear that this is happening because the California Academy of Sciences is no longer funding them — but hopefully the independence works out! If you know fancy people with fancy checkbooks for donations, now would be a great time to tell them about this shiny new science media nonprofit.

Reposted by David Garrison

Dr Dan Shugar 🇨🇦 @watershedlab.bsky.social · 24/06/2026

Our paper on the Tracy Arm megatsunami has been downloaded 98,735 times since it was released online about 6 weeks ago. I know it's just a number but I'd love for it to get to 100,000 before two months is out. You should download it and also repost this! 🧪⚒️ www.science.org/doi/10.1126/...

A 481-meter-high landslide-tsunami in a cruise ship–frequented Alaska fjord

Early in the morning of 10 August 2025, a >64 × 106–cubic meter landslide struck Tracy Arm fjord in Alaska. The landslide was preconditioned by glacial retreat caused by climate change. The resulting ...

Reposted by David Garrison

Dr Dan Shugar 🇨🇦 @watershedlab.bsky.social · 05/06/2026

If PM @mark-carney.bsky.social wants to know what I am for, here it is: I want Canada to become a leader in the green energy transition. I want other countries to look at us with envy at how we can not only survive, but thrive on renewables. nationalpost.com/news/we-dont...

nationalpost.com

'We don’t want to hear what people are against,' Carney tells Vancouver audience after pipeline criticism

Carney said there is momentum behind his nation-building agenda after receiving criticism from British Columbia Premier David Eby.

Reposted by David Garrison

bioGraphic @biographic.bsky.social · 28/05/2026

Tariffs are Spurring Shipping Noise in the St. Lawrence Seaway Geopolitical tensions have Canada looking for new trade partners—with potentially unfortunate side effects for marine life. by Caitlin Stall-Paquet www.biographic.com/tariffs-are-...

Tariffs are Spurring Shipping Noise in the St. Lawrence Seaway - bioGraphic

Geopolitical tensions have Canada looking for new trade partners—with potentially unfortunate side effects for marine life.

Reposted by David Garrison

Rebecca Heisman @rheisman.bsky.social · 18/05/2026

HEY HEY I may not be on social media much anymore but I wrote a thing for @biographic.bsky.social about gulls nesting in unexpected places that maybe aren't so unexpected after all. www.biographic.com/spains-cliff...

Spain’s Cliff-Nesting Gulls Are Actually Beach Bums - bioGraphic

Almost a century ago, egg-poaching humans drove yellow-legged gulls away from beaches. Now the birds are coming back.

Reposted by David Garrison

Ian Rose @ianrosewrites.bsky.social · 15/05/2026

Having dug deep into bird nest box design myself this year, I appreciate the nuance in this Greg Noone piece for @biographic.bsky.social about nest boxes at solar farms. Solar and wind are the future. They are great. *And* how we design and deploy them matters. www.biographic.com/how-bad-choi...

How Poor Choices are Making Spain’s Solar Boom Bad for Birds - bioGraphic

Solar energy is good, but solar farms stuffed with ill-conceived nest boxes are not.

Reposted by David Garrison

Brooke Jarvis @brookejarvis.bsky.social · 14/05/2026

So many species that we associate with a certain habitat -- grizzly bears in the mountains, condors by the coast, jaguars in the jungle, etc etc -- live there not because it's the only place they can/used to/like to live, but because that's all that we've left for them

Reposted by David Garrison

Chris Mah @echinoblog.bsky.social · 11/05/2026

A quite lovely photo of a worm inside this tunicate! Is it eating? or... ? #wormwednesday #tunicatetuesday via @biographic.bsky.social www.biographic.com/friends-or-f...

Friends or Foes? - bioGraphic

A flatworm and a sea squirt mingle in the tropical waters of West Papua, offering a glimpse into the complexity of interspecies relationships.

Reposted by David Garrison

bioGraphic @biographic.bsky.social · 06/05/2026

Figuring out how to make wild birds think decoys are real is the work of Sue Schubel, known as “Seabird Sue.” For the past decade, she’s made decoys for a global seabird restoration program that's helped some of the world's most endangered birds return to habitat from which they’ve been extirpated.

The Artist Showing Seabirds Home

The woman at the heart of a long-standing avian restoration program blends art and science to attract birds back to lost habitat.

Reposted by David Garrison

bioGraphic @biographic.bsky.social · 30/04/2026

Nearly Half of Italy’s Wolves Are Part Dog Now. Is That a Problem? Wolf-dog hybrids are taking over Italy, raising scientists’ concerns for the future of the country’s wolves. @gennarotomma.bsky.social www.biographic.com/nearly-half-...

Nearly Half of Italy’s Wolves Are Part Dog Now. Is That a Problem? - bioGraphic

Wolf-dog hybrids are taking over Italy, raising scientists’ concerns for the future of the country’s wolves.

Reposted by David Garrison

bioGraphic @biographic.bsky.social · 28/04/2026

Cheers to 10 years! On the occasion of bioGraphic's 10-year publishing anniversary, we put together a Q&A with our co-founders and a roundup of 10 stories, chosen by current and former editors. You can find it all via the link below. www.biographic.com/its-our-10-y...

blue macaws wearing birthday hats

Reposted by David Garrison

Jason Dove Mark @jasondovemark.bsky.social · 27/04/2026

Fascinating read here, via @biographic.bsky.social and Emma Marris www.biographic.com/tending-to-p...

Tending to Paradise

A rare prairie ecosystem shaped by humans in Washington State exemplifies a shift in how conservationists envision our relationship with the natural world.

Reposted by David Garrison

bioGraphic @biographic.bsky.social · 22/04/2026

"The clouds are low and the waves are olive green. I am heading to a place that sounds like a fairy tale: an island covered in flowers where just one person lives, all alone, tending the land."

Tending to Paradise

A rare prairie ecosystem shaped by humans in Washington State exemplifies a shift in how conservationists envision our relationship with the natural world.

David Garrison @ridingmybike.bsky.social · 22/04/2026

The tiny amount of old growth forest in British Columbia must be allowed to remain standing. We have more than enough land where logging is allowed, we do not need more. The benefits of the remaining old growth far, far outweigh the short term profits of logging them. thetyee.ca/News/2026/04...

The Forest Quietly Removed from BC’s Old-Growth Deferral List | The Tyee

Most of Vancouver Island has been logged. Now, one of the last ancient forests, in the Tsitika River watershed, is on the chopping block.

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Reposted by David Garrison

Ben Goldfarb @bengoldfarb.bsky.social · 17/04/2026

"Across the West, farsighted local governments have begun preserving & connecting habitats through unsexy regulatory tools such as zoning, land-use codes, & comprehensive plans." For @biographic.bsky.social, I wrote about planning (don't yawn!) for conservation. www.biographic.com/living-in-th...

Living in the Sprawl - bioGraphic

As housing developments devour open space in the western United States, can local governments stave off habitat loss?

Reposted by David Garrison

Katya Zimmer @katarinazimmer.bsky.social · 17/04/2026

Allow me to introduce you to the palolo worm. This marine critter is known for its spectacular spawning events that happen on one single night every year, making a lasting mark on many Indigenous cultures in the southwestern Pacific. For @biographic.bsky.social: www.biographic.com/the-moon-of-...

The Moon of the Palolo Worm

In the Pacific Islands, communities count on the annual spawning of a species of sea worm to fill bellies, spark celebration, and shape peoples’ sense of time.

Reposted by David Garrison

The Tyee @thetyee.ca · 15/04/2026

It didn’t take long for the smoke to clear following 2017’s horrendous wildfires for the British Columbia government to respond with a plan to log more forests and plant more trees. Ben Parfitt writes. 🪵 #bcpoli

Why Logging Isn’t the Solution to BC’s Wildfire Crisis | The Tyee

Older trees aren’t to blame for BC’s increasingly fiery summers, the science shows.

Reposted by David Garrison

Krista Langlois @cestmoilanglois.bsky.social · 09/04/2026

It's always a delight to work with @katarinazimmer.bsky.social, and this story checks all the boxes for me as an editor: ✅ Weird invertebrate with fascinating biology ✅ Traditional ecological knowledge that matters in the modern world ✅ Pacific Islands culture ✅ Myths and symbolism

The Moon of the Palolo Worm

In the Pacific Islands, communities count on the annual spawning of a species of sea worm to fill bellies, spark celebration, and shape peoples’ sense of time.

Reposted by David Garrison

s. e. smith @sesmith.lol · 07/04/2026

Love this read about connecting to the cycle of the Palolo worm in the South Pacific, and how nature keeps time.

The Moon of the Palolo Worm

In the Pacific Islands, communities count on the annual spawning of a species of sea worm to fill bellies, spark celebration, and shape peoples’ sense of time.

Reposted by David Garrison

Serena Renner @serenarenner.com · 03/04/2026

Incredibly honored to see my @biographic.bsky.social feature "Welcome to the Great Bear Sea" (edited by the talented @cestmoilanglois.bsky.social) on the long list for the Environmental Reporting category of the 2026 @oneworldmedia.bsky.social awards 🙏

oneworldmedia.org.uk

Presenting One World Media's 2026 Awards Longlist

Reposted by David Garrison

bioGraphic @biographic.bsky.social · 19/02/2026

Are you a regular bioGraphic reader? 🙋 We're looking to get to know you better. Please take five minutes to tell us what you think of our work: www.surveymonkey.com/r/7X68X86

Reposted by David Garrison

Ben Goldfarb @bengoldfarb.bsky.social · 19/02/2026

Man, on top of everything else that’s plaguing salmon, now we have to worry about… vitamin-B deficiency related to excess predation on anchovies?! www.biographic.com/a-mysterious...

A Mysterious Salmon-Killing Affliction is a Mystery No More - bioGraphic

In California, scientists tracked the source of a severe vitamin deficiency that’s killing endangered fish.

David Garrison @ridingmybike.bsky.social · 19/02/2026

I couldn't agree more!

Reposted by David Garrison

bioGraphic @biographic.bsky.social · 12/02/2026

📣 We're conducting a survey to get to know our readers better and understand what bioGraphic means to you. Please take five minutes to share your feedback: www.surveymonkey.com/r/7X68X86

White text on teal background says "We Want to Hear From You!" underneath stylized quotation marks.

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Katie Mack @astrokatie.com · 12/02/2026

You can't... repeal... a scientific finding. At that point it's just called lying about it.

Reposted by David Garrison

Rebecca Heisman @rheisman.bsky.social · 12/02/2026

New by me! I spoke to Northern Gannet researchers in the UK about what it was like to see HPAI rip through seabird colonies there and how things have gone since. 🪶🌎🧪 www.biographic.com/after-the-ou...

After the Outbreak - bioGraphic

A northern gannet colony devastated by avian influenza is slowly recovering—and so are the researchers who witnessed the virus’s wrath.

Reposted by David Garrison

Jimmy Thomson @jameswsthomson.com · 11/02/2026

If you're one of the people spreading rumours about the Tumbler Ridge's identity, maybe ask yourself why it's necessary for the world to know now, rather than later today, when the trade-off is the possibility of fuelling a moral panic against vulnerable people.

David Garrison @ridingmybike.bsky.social · 10/01/2026

Reposted by David Garrison

bioGraphic @biographic.bsky.social · 08/01/2026

Farmers in Gabon notice that elephants sometimes eat the leaves and stems of banana and papaya plants while leaving the nutritious fruit behind. Why? New evidence shows the elephants may be taking advantage of plants' medicinal properties to treat parasites. Read more:

Pachyderm Pharmacies - bioGraphic

Scientists find that elephants who raid farms might be looking for medicinal plants, sparking a cross-species exchange of pharmaceutical knowledge.