Summary of problems:

Modern species and fossil evidence all give us insight into evolutionary history, and of the sequence of evolutionary changes leading from the common ancestors of modern species to the modern forms.

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Summary of problems:

The dinosaur ancestors of birds probably did not have diaphragms. The one researcher cited to oppose this view also rejects the evidence that birds evolved from dinosaurs; his views on both topics have been widely refuted.

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Paleontologist Matt Wedel explains:

Summary of problems:

The claim that air sacs in evolving birds would put a hole in the a diaphragm and lead to a nonfunctional, fatal intermediate, is based on selective quoting of a single sentence from a scientific publication from 1997; the conclusions in that publication are more complicated than one might guess from reading that single out-of-context sentence. Furthermore, Explore Evolution ignores more recent findings that have overturned the idea that the dinosaur ancestors of birds even had diaphragms to damage.

Summary of problems:

There are detailed, testable models of the evolution of dual-opening parabronchi in bird lungs from single-opening alveoli found in the reptilian ancestors of birds. Explore Evolution asks a number of questions about this transition, but then fails to offer students any means to answer any of them, or to discuss how a student or scientist might go about finding answers to these questions.

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Explore Evolution asks its readers:

Summary of problems:

There are good examples of the functional intermediate stages in the evolution of the mammalian heart. Explore Evolution repeats inaccurate and long-debunked creationist claims about the impossibility of evolving a four-chambered mammalian heart from a three-chambered reptilian heart. Though extensive research exists into exactly how this transition took place, Explore Evolution ignores the research, and abandons intellectual inquiry in favor of creationist talking points.

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