Some links: 64

Clearing the bookmarks for things that I had intended to post more fully about:

  • William J. Ripple and Robert L. Beschta report on trophic effects due to reintroduction of Gray Wolf (Canis lupus) into Yellowstone National Park. Some herbivore species are down, but aspens, cottonwoods, and willows are up. And, perhaps surprisingly, species that depend on woody plants like beavers are up, too.
  • The key to Broadway success might be in assembling a creative team with a mix of old hands and newcomers, suggests research by Guimerà et al. and summarized by Matt Golosinski for Northwestern’s KelloggInsight. The optimal number of team members has remained constant at seven since about 1930.
  • Vi Hart’s “Doodling in Math Class” videos (independent, pre-Khan Academy) are smart and delightful. Perhaps the centerpiece is her three-part demystification of the Fibonacci sequence.

    I am as far as possible from the only two other leaves in the universe!

  • Related: Alexander Mitsos and Corey Noone report that the optimal arrangement of mirrors in a solar energy collector follows the pattern of a Fermat spiral.