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The Platypus, Part 2

Skeleton of a platypus as seen from the underside. It is not mentioned in the text, but note how the rib cage is separate from the hips. That shows that the platypus has a diaphragm, a structure that is unique to mammals. Image modified from Griffiths, Mervyn (1988) "The Platypus" Scientific American 258(5): 84-91. To… Continue reading The Platypus, Part 2

The Platypus, Part 1

A platypus. Photograph modified from an image found on Wikimedia Commons. Photograph by Maria Grist. Several posts ago, I wrote about placozoans, a unique type of simple animal. I began wondering, what is one of the more unusual animals? Something that when people learn about it, they think, "That thing is weird"? I also wanted… Continue reading The Platypus, Part 1

A Simple Animal?

Trichoplax adhaerens. An animal. This particular specimen is about 0.5 mm wide. Image from Eitel et al. (2013). See that seemingly shapeless blob of cells in the image above? That is the world's simplest animal. It is Trichoplax, a placozoan. Now, it might seem strange that I called Trichoplax a simple animal. After all, we… Continue reading A Simple Animal?

What Is Truth?

If you noticed that a person who is using his own observations and reasoning cannot be objective, then you have some understanding of the problem of skeptics critiquing the Bible. An article in the April 2017 issue of Scientific American has a very provocative title: "What Would It Take to Prove the Resurrection?"[1] This article… Continue reading What Is Truth?