Science online, perverse incentives edition

Photo by Arthur Chapman.

Carnival of Evolution, March 2012

Erodium cicutarium. Photo by jby.

I completely failed to submit anything to the most recent edition of the Carnival of Evolution, but fortunately I was the exception, not the rule—the monthly compendium of online writing about the complications and implications of evolutionary biology is online over at Synthetic Daisies. This edition features a nifty phylogenetic organizing framework, and a crossword puzzle. Go check it out. ◼

Science online, paper in your hot dog edition

Hot dog. Photo by stu_spivack.
  • Two plus two may equal five, depending on what you’re counting. A series of thought experiments explain why in statistics, numbers need not add up.
  • Because of course you were curious. The anatomy of alligator erections, explained.
  • In other news, too much food is bad for you. Deborah Blum puts the recent study linking red meat consumption to risk of death in context.
  • Teamwork! Pesticides aren’t the sole cause of honeybee colony collapse—but they interact dangerously with other stresses.
  • But less likely to be journal editors. Hmm. Women are less likely to turn down requests for peer review.
  • And how to cultivate better ones. Author Charles Duhigg tells Steve Silberman how to break bad habits
  • Unnatural history. A new kind of museum showcases animals that have been modified by humans.
  • My baloney has a first name/ It’s P-A-P-E-R. A new form of processed cellulose—the same plant fibers used to make paper—could replace saturated fat in foods like hot dogs.

 ◼

Nothing in Biology Makes Sense: Making sense of the evolution of language

The language of evolution. Photo by CharlesFred.

This week at the collaborative blog Nothing in Biology Makes Sense, guest contributor James Winters describes the considerable inter-relationships between evolutionary biology and the study of human language.

Darwin recognised, along with several other linguists of the period such as August Schleicher and Mikołaj Kruszewski, that language falls under the remit of evolutionary principles. Since then, there has been a renewed and growing interest in evolutionary (Croft, 2000) and ecological (Mufwene, 2000) theories of language change, with biological, cultural and linguistic forms of evolution being captured by the more general rubric of Complex Adaptive Systems. … it is the capacity to evolve and adapt that differentiates language and biology from these other systems, with the key concept being their ability to learn: past experiences filter through, or influence, future states of the system due to cumulative amplification dynamic (Deacon, 2010).

To find out more, go read the whole thing. ◼

Science online, endogenous cannabinoids edition

Running! Photo by andronicusmax.
  • If you’ve got ’em, use ’em. Eels’ comparatively complex lifecycle may be made possible by extra copies of key developmental genes.
  • Yes, it’s real. No, we don’t know why. What science knows—and what it doesn’t—about the runner’s high.
  • I don’t think I’d call any crocodilian snout “dainty,” though. The shapes of an alligators’ and crocodiles’ snouts don’t make a difference for the strength of their bites.
  • Alas, it won’t produce flour ready-made for Girlscout cookies. Wheat engineered to carry and express genes from mint could repel aphids.
  • As if you needed an excuse to build a robotic squirrel. The purpose of ground squirrels’ rattlesnake-repelling tail-waving, tested using a robotic squirrel.
  • Because, as we all know, humans stopped experiencing natural selection 20,000 years ago. Is it possible that human speech and music are purely products of cultural evolution, instead of natural selection?
  • Less obviously, that is. Fruit flies left to evolve in complete darkness for 1,400 generations change less than you might think.

 ◼

Science online, world’s worst amnesia edition

Zebra finches. Photo by Lip Kee.

 ◼

Carnival of Evolution, March 2012

Ladybird beetle on a Joshua tree leaf. Photo by jby.

This month’s edition of the Carnival of Evolution, a regular roundup of all things online and evolutionary, is online at Splendour Awaits. ◼

Science online, naturally selected animation edition

When your legs are adjusting to exercise, so is your brain. Photo by eccampbell.
  • Brains are more like brawn than we thought. Trials in lab rats show that brain tissue can burn glycogen, just like muscle tissue.
  • Ladybuisness with a twist? If vaginal pH can determine vulnerability to infection, should women use acidic tampons, or even douche with lime juice?
  • Evolutionary innoculation. A toxic introduced plant has apparently helped Australian lizards evolve resistance to cane toads’ toxin.
  • Drowning them out under water. New evidence shows that human-created sounds can interfere with whale song.
  • Getting by with a little help from our friends, and our ancestors. Comparing groups of human children, chimpanzees, and capuchin monkeys solving the same puzzle shows that humans get ahead by collaboration.
  • Practical chemistry. Pseudonymous authors point out that it’s not so hard to make cold medecine at home—from crystal meth.

And, via Carin Bondar, a video illustrating evolution using drawings “evolved” by elementary school students.


 ◼

Science online, lab-grown hamburger edition

Yosemite National Park. Photo by Genista.

 ◼

Science online, woodrats to camel crickets edition

Careful in that dodgeball game—your competitiveness could activate inflammation. Photo by How I See Life.

 ◼