MTPR

evolution

Bug Bytes: Evolution And 'The Predicted One'

Jul 15, 2019
Xanthopan morganii praedicta moth
kqedquest, https://www.flickr.com/photos/kqedquest/3256354461/ (CC-BY-NC-2 [https://creativecommons.org/licenses/by-nc/2.0/])

When it comes to the topic of evolution Charles Darwin is "the man." In 1859, his book, On the Origin of Species provided compelling evidence that transformed the theory of evolution into widely accepted fact.

Evolution is the process by which an organism changes over time to better adapt to its environment. This theory includes the idea of coevolution — where two or more species evolve together for their mutual benefit.

"The 'tree of life' that we have believed in as the picture of evolutionary history, ever since Darwin, is not entirely wrong but drastically incomplete and too simple. Tree branches always diverge, and it turns out evolutionary lineages diverge and converge. So limbs grow together and there are channels that have moved from one branch to another. The premise of my book is that the tree of life is not strictly a tree—it is a web, it’s a network, it’s something for which we don’t have a visual metaphor. It’s a tangled tree and the history of life is radically different from what we thought we knew 45-50 years ago. . ." -- David Quammen 

The Thrifty Gene Hypothesis And Its Offspring

Mar 21, 2015
D. Sellayah et al/Endocrinology 2014, adapted by E. Otwell

The Food Guys discuss the "Thrifty Gene Hypothesis," proposed in 1962 by geneticist James V. Neel, which prompted investigation into a genetic and evolutionary basis for diabetes among some human populations who had only recently been introduced to the Western diet of the 1960s.

Flickr user, Meet the Media Guru

"My way of learning was never through a book - it was always through experience. Going out and finding things and thinking about them is basically how I have learned everything. When it comes to teaching a student something, I want that student to do the same thing. I think reading is overrated, quite frankly, and I think there's no reason to read a book and learn about someone else's idea. I think it's more important to experience something and have your own idea."

Mont-Africa

May 23, 2014
Gaurav P.

5/25/14 & 5/26/14: This week on "Fieldnotes:" "Mont-Africa," by Camille Barr.