@heliconians If you knew Richard ffrench-Constant, you'd be sad that he has passed. I wrote about him in heliconius dot org: www.heliconius.org/2026/richard...

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Fresh out of the oven: a little provocation about the conclusion that macroevolution rates are slower than we would expect. Feedback and rebuttals are welcome academic.oup.com/evlett/advan... with @damelo.net @apenna.bsky.social @agporto.bsky.social and others

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A new preprint w/ @landismj.bsky.social that I’m excited to share! We develop a theoretical framework linking evolutionary scenarios to mathematical constraints on parameters that produce given stationary frequencies in state-dependent speciation-extinction models. We call these “rulesets.” #EvoBio

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NEW: Wendell Berry, the Kentucky farmer whose poems, novels and essays argued for six decades that a country’s care for its soil reveals what it will make of its neighbors, died on Monday at his home in Port Royal, Kentucky. He was 92. Mr. Berry, a Baptist, became an unlikely hero among Catholics.

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Hey Bluesky! Emerging from my dissertation-formatting cave to share that I defended my PhD last week! So many incredible people helped me reach this point, especially over the last few months as I scrambled to finish in time. I’m lucky to be surrounded by such good friends.

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