Darwin human evolution | Charles Darwin's Theory of Evolution by natural selection

Darwin human evolution

Evolution coming undone in Galapagos: human impacts on Darwin's

emy Bay thus seemed to have fused together into a single hyper-variable population in concert with the dramatic increase in human population density at that site.

That is not a native food!

We proposed in the 2006 paper that fusion of the two G. fortis morphs at Academy Bay was the result of humans introducing food types that were accessible by finches of all beak sizes, thus turning the separate adaptive peaks into a long adaptive ridge spanning different beak sizes. On such a ridge, selection against intermediate birds should disappear and their increasing abundance should eliminate the bimodality. We provided support for this hypothesis in a paper in Evolution in 2011 that showed how the naturally strong (confirmed at El Garrapatero) associations between diets, beak sizes, bite forces, and gene flow that presumably drive finch diversification had all become weaker at Academy Bay. In short, humans were causing “reverse speciation” or “despeciation” by turning a formerly rugged adaptive landscape with distinct fitness peaks into a broad ridge without the gaps (fitness valleys) necessary to maintain species distinctiveness.

Our 2011 paper.

This finding was where we left the story until recently. This year, we (spurred mainly by Luis) took up the problem again by making more extensive surveys in the town of Puerto Ayora to see how many finches were using human resources. Various teams of researchers and Earth Watch volunteers would walk through town in the mornings counting birds and determining what they were feeding on. Although I was already suspect the outcome, I was still rather shocked by how many finches were present in the town (more than in nature) and their incredible use of human foods – although they still found natural foods in vacant lots and gardens. I saw finches eating waffles, chips, plantains, rice, corn, fruit, ice cream cones, and many other items. I thereby gained a personal confirmation of our original intuition that finches in Puerto Ayora (Academy Bay) had access to many food types that were usable by finches of any beak size. Then came the real kicker – at El Garrapatero.




Darwin was wrong about humans. Still no god.

by underscore

Darwin is one of my heroes, but I believe he was wrong in seeing human evolution as a result of the same processes that account for other evolution in the biological world - especially when it comes to the size of our cranium.
Darwin had to put large cranial size down to sexual selection, arguing that women found brainy men sexy...

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FAQ

Ray Eston Smith Jr
What are the fundamental laws of social morality?

Here's what I think:

First Law. Don't initiate force or fraud. This is absolutely true because people will not voluntarily associate with anyone who coerces or defrauds them. If a group of people don't obey this law, then they aren't voluntarily associated, therefore they are not a society, therefore social morality does not apply to them, anymore than it applies to rocks and trees.


Second Law. There are no other laws, because any other law would violate the first law.

Note: I am distinguishing between social morality, which people…

I don't think there are really any laws of social morality it is just social order.

Few scientists and religious scholars have seriously pondered how science and religion can be reconciled. But times are changing. Not long ago I attended two meetings that brought together scientists, theologians, and religious scholars to discuss just that issue. The first gathering was part of the Science and the Spiritual Quest II program ( sponsored by the Center for Theology and the Natural Sciences in Berkeley, California. The other was organized by the American Association for the…

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