From San Diego Zoo Wildlife Alliance <[email protected]>
Subject Half a century of keeping it cool 🧬🧪🔬
Date November 12, 2025 4:09 PM
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San Diego Zoo Wildlife Alliance

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NOTES FROM THE FIELD | 2025 | No. 14

50 years, countless innovations - test tube image

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Every day in our Frozen Zoo®, something extraordinary
happens-we change the future of life on Earth, one microscopic
cell at a time. For 50 years, this collection of living cell lines has
stood as a beacon of hope for endangered species around the world. By
preserving these samples and the invaluable genetic diversity they
contain, we're redefining what it means to protect our
planet's wildlife and the ecosystems we all share.

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As we celebrate the Frozen Zoo's 50th anniversary, discover its
inspiring legacy and staggering success stories as we look to the
dynamic future of this visionary conservation resource.

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JUST GETTING STARTED

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HISTORY IN THE MAKING - IMG OF SCIENTIST

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Our Frozen Zoo is the first biobank of its kind in the world, as well
as the most extensive and diverse. In every era of its existence, this
pioneering facility, part of our Wildlife Biodiversity Bank has
changed what's possible in wildlife conservation.

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LIKE NO OTHER >

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TWO TIMES THE TRIUMPH _ IMG HORSE

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To help protect the endangered Przewalski's horse, we harnessed
cutting-edge cloning technology and proved its tremendous conservation
potential. In doing so, we've helped change the species'
story forever-not just once, but twice.

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FASCINATING FOALS >

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BEST FOOT FORWARD - Ferret

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When Antonia gave birth to two kits last year, she made history. This
black-footed ferret, cloned from cells we preserved nearly 40 years
ago, is helping restore genetic diversity to a species once thought to
be extinct.

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BIG BREAKTHROUGH >

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BRANCHING OUT - img branch

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Oak trees are an "exceptional species," meaning their
cells can't be frozen like other wildlife. Our experts have now
found a completely new way to preserve-and even freeze-the
Nuttall's scrub oak, offering hope for endangered plants
everywhere.

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DEEP ROOTS >

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BROADCASTING OUR IMPACT - img scientist

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These efforts are far-reaching, and so is the international attention
they receive. From eye-opening PBS documentaries to beloved
children's programming across the pond, we're sharing the
incredible significance of the Frozen Zoo's work far and wide.
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WATCH HERE >
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IN IT TOGETHER

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Powerful conservation solutions require powerful partnerships. At this
year's prestigious World Conservation Congress, held by the
International Union for Conservation of Nature, we united a global
network of experts for an ambitious goal: biobanking all endangered
species worldwide by 2075.
STRENGTH IN NUMBERS >

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OUR LATEST CHAPTER

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We're always looking ahead, and that means we're looking
toward all the Frozen Zoo can achieve in the next 50 years. With the
help of our partners and advanced new technology, we'll continue
to revolutionize the ways we protect the wildlife and ecosystems that
rely on us to thrive.
WHAT'S NEXT >

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WILDLIFE HEROES
CHANGE THE WORLD.

John, your ongoing support makes a lifesaving difference
for endangered wildlife. As a Wildlife Hero, your monthly gift will
take us further as we work to ensure a brighter future for endangered
species including wild horses, ferrets, oak trees, and others through
our eight global Conservation Hubs and our Frozen Zoo. As a Wildlife
Hero, you drive the innovation that brings hope to the extraordinary
wildlife relying on us to thrive-and survive-each and
every day. You make it all possible, and we're forever grateful
for you.

Your monthly gift will make a world of a difference for wildlife.

BE A HERO

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San Diego Zoo Wildlife Alliance

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Your support saves wildlife.

San Diego Zoo Wildlife Alliance is an international conservation
nonprofit and a registered
501(c)(3) organization. Tax ID# 95-1648219.

With more than 100 years of wildlife care expertise and partnerships
around the globe, we are saving, protecting, and caring for species
worldwide.

Follow along on our mission to save wildlife

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Photo Credit | Chimpanzee photo: slpu9945/iStock/Getty Images Plus

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P.O. Box 120551, San Diego, CA
92112    |     (619)
231-1515    |     Email Us
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© 2025 San Diego Zoo Wildlife Alliance. All rights reserved.

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