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Wednesday, August 13, 2008

For Biology Enthusiasts

Sue writes:

Cicadas are some of the first creatures we noticed when we arrived in PNG in 2005. They are the national alarm clocks, but they are rarely seen.

In the eastern US, when the 17-year cicadas come out of their underground homes, they are seen everywhere. Not so in PNG. These cicadas must hatch each year. They seem to have their own territories, and before dawn they call out to the other cicadas that they had better stay away.

Who can notice a way that this PNG cicada is different from ones that live in the eastern US? They are about the same size; their bodies about three inches long, including the wings.

Another biology related thing: Jeff and I have been reading a book called What Darwin Didn't Know by Geoffrey Simmonds. It was published in Eugene, Oregon, by Harvest House in 2004. Simmonds is a physician who has studied Darwinism for about 40 years. He has accumulated a number of medical facts that were not known in Darwin's time. He presents his findings in a respectful way to Darwin, pointing out that some of his objections to Darwinism were even acknowledged by Darwin himself. The section on chromosomes was most fascinating to me. I didn't know that animal species have varying numbers of chromosomes from other species, making macroevolution improbable. See what you think about this book.

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