pinboard November 24, 2022

  • De novo origins of multicellularity in response to predation | Scientific Reports
    The transition from unicellular to multicellular life was one of a few major events in the history of life that created new opportunities for more complex biological systems to evolve. Predation is hypothesized as one selective pressure that may have driven the evolution of multicellularity. Here we show that de novo origins of simple multicellularity can evolve in response to predation. We subjected outcrossed populations of the unicellular green alga Chlamydomonas reinhardtii to selection by the filter-feeding predator Paramecium tetraurelia. Two of five experimental populations evolved multicellular structures not observed in unselected control populations within ~750 asexual generations. Considerable variation exists in the evolved multicellular life cycles, with both cell number and propagule size varying among isolates. Survival assays show that evolved multicellular traits provide effective protection against predation. These results support the hypothesis that selection imposed by predators may have played a role in some origins of multicellularity.
  • Stable Diffusion 2.0 Release
    The open source release of Stable Diffusion version 2.
    NYC PREMIERE Filmmaker Gabriela Cowperthwaite (Blackfish) returns with another explosive exposé. On a global scale, governments and uber-wealthy private investors move to secure control of the natural resources that will provide food and water to the worldâ??s population for the next century and beyond, working either in the shadows or waging smokescreen wars to ruthlessly grab for power. Investigative reporters valiantly work to peel back the cover-ups, often at great personal risk. â?? Jaie LaplanteThe first screening will be followed by a Q&A with subject/producer Nathan Halverson, Amanda Pike.This film contains the following accessibility options for viewers:Closed Captioning for online screeningsAll in-person screening venues provide hearing impaired listening devices upon request with venue management.All guests & staff will be required to comply with our Health & Safety protocols while attending DOC NYC events. For the latest information, please review our policies here.
  • Opinion | End-Times Tourism in the Land of Glaciers
    I gazed from the cruise ship’s railing with a contemporary Alaskan’s gloom.
  • There’s a Massive Antarctic Exploration Vehicle Lost Somewhere at the Bottom of the World
    Last seen in 1958, it was designed to travel 5000 miles and self-sustain for an entire year.
  • The 25 Travel Experiences You Must Have
    A pair of internationally minded writers, a chef, an architect and a landscape photographer made a list of the most extraordinary adventures a person should seek out. Here are the results.
  • 11 Hotels to Visit in Your Dreams (Published 2020)
    Travel options may be limited, but here are places sure to linger in the mind, and that these writers, designers and others hope to get to — or get back to — someday.
  • You Don’t Even Realize These Products Have Lifetime Warranties
  • Whose Midlife Crisis Is It, Anyway?

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