Distinguishing species boundaries from geographic variation | PNAS In an era of unprecedented biodiversity loss, the need for standardized practices to describe biological variation is becoming increasingly importa...

The question of how to distinguish species boundaries from intraspecific geographic variation is now more of an issue than ever in the genomic age. www.pnas.org/doi/10.1073/...

Congratulations to the newest members elected to the U.S. National Academy of Sciences in Evolutionary Biology today: Beth Shapiro, Fred Nijhout, and Jonathan Pritchard! Also International Member Valeria Souza from Mexico!

"As long as I have any choice in the matter, I shall live only in a country where civil liberty, tolerance, and equality of all citizens before the law prevail.”—Albert Einstein

Very interesting and important panel about how we can increase and facilitate distribution of all the new renewable energy production at #NAS162.

Marcia McNutt discussing the importance of public engagement in science in her Presidential address at #NAS162.

Congratulations to David Queller on his induction to the US National Academy of Sciences in Evolutionary Biology! #NAS162

Congratulations to Ray Huey on his induction to the US National Academy of Sciences in Evolutionary Biology! #NAS162

Congratulations to Adriana Briscoe on her induction to the US National Academy of Sciences in Evolutionary Biology! #NAS162

It is warm enough on this late November day at the Double Helix Ranch for this Red-Striped Ribbon Snake to be swimming around, looking for Cricket Frogs.

Darwin's first thoughts about the Great Tree of Life, from his 1837 notebook.

Happy 165th birthday for the publication of The Origin of Species, and people thinking deeply about evolutionary trees. Darwin's notebook entry about phylogenesis, show here, is older, at 187 years, and became the basis for the only figure originally published in The Origin.