Jonathan Losos
jblosos.bsky.social
Jonathan Losos
@jblosos.bsky.social

Evolutionary biologist, herpetologist, cat lover.

Jonathan B. Losos is an American evolutionary biologist, and herpetologist.

Source: Wikipedia
Environmental science 40%
Biology 25%

Amazon has decided to unload my books at bargain basement prices!

If you look carefully, you'll see that the text is written by yours truly. I won't comment on that, but ther photographs are extraordinary! www.amazon.com/Feline-Photo...
Feline: Photographs
Amazon.com: Feline: Photographs: 9781419773648: Flach, Tim, Losos, Jonathan: Books
www.amazon.com

3-legged lizards can thrive against all odds, challenging assumptions about how evolution works in the wild
theconversation.com/3-legged-liz...
3-legged lizards can thrive against all odds, challenging assumptions about how evolution works in the wild
Most lizards probably don’t survive devastating injuries. But a new study documents 122 cases of limb loss across 58 species – these exceptions shine a new light on natural selection.
theconversation.com

Israel's Gaza War Has Made Me Ashamed to Be a Jewish Zionist
open.substack.com/pub/perilous...
Israel's Gaza War Has Made Me Ashamed to Be a Jewish Zionist
Israel's fight against Hamas started as a just war, but is now a moral travesty
open.substack.com

At long last, The Cat's Meow featured in the New York Times...sort of. www.nytimes.com/.../books/re...

Some Thoughts on Trumpism and Soviet Communism on a Visit to Prague
open.substack.com/pub/perilous...
Some Thoughts on Trumpism and Soviet Communism on a Visit to Prague
With Trump’s tariffs and immigration police, there are echoes of Eastern Europe’s authoritarian past
open.substack.com

How I built a 6 foot long stainless steel anole lizard sculpture: the Movie www.anoleannals.org/2025/06/03/h...
How I built a 6 foot long stainless steel anole lizard sculpture: the Movie
Read about Steve Nielsen, the artist, here.
www.anoleannals.org

The new rule would limit the Act to protecting species from intentional take, i.e., killing. This would be catastrophic for endangered species. While intentional take certainly threatens wild populations, habitat modification is the primary driver of biodiversity loss. Act today--deadline is Monday!

USFWS and NOAA have a proposed rescinding the definition of “harm” under the Endangered Species Act. Presently, “harm” includes habitat modifications, such as those due to land-use change, invasive species, pollution. The new rule would be much more limited

www.federalregister.gov/documents/20...
Rescinding the Definition of “Harm” Under the Endangered Species Act
The U.S. Fish and Wildlife Service (FWS) and the National Marine Fisheries Service (NMFS) (collectively referred to as the Services or we) are proposing to rescind the regulatory definition of "harm" ...
www.federalregister.gov

Reposted by Jonathan B. Losos

I’m beyond proud to share that I’ve officially earned my Ph.D. and served as Student Marshal for the School of Medicine at WashU! Grateful to my advisor, @jblosos.bsky.social, my committee, and everyone who supported me. And now, on to the next chapter!