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/article/turtle-eggs-sense-temperature-changes
Randy J. Guliuzza, P.E., M.D. - Remarkably, when a number of reptilian mothers (including lizards, snakes, turtles, and alligators) bury eggs in warm, incubating sand, all the eggs may produce offspring of the same gender. Females develop at one temperature and humidity, males...

/article/bajau-diver-study-circular-reasoning
Randy J. Guliuzza, P.E., M.D. - Bajau divers of the Central Sulawesi peninsula in Indonesia are able to hold their breath and dive to amazing depths of over 200 feet using only rock weights and hand-made wooden goggles. Researchers recently compared the Bajaus’ spleen...

/article/doolittle-recycled-evolutionary-theory-is-old-news
Randy J. Guliuzza, P.E., M.D. - “What was old is new again” describes fashion cycles where young people today are wearing clothes and buying furniture styled after that of their grandparents. Evolutionary biology also has similar cycles, especially when it comes to...

/article/designed-mechanisms-explain-convergent-traits
Randy J. Guliuzza, P.E., M.D. - Diverse creatures have repeatedly been observed rapidly and independently converging on the same traits needed to solve similar environmental challenges. How extensive is this phenomenon? Harvard biologist Jonathan Losos said in 2017, “In...

/article/environmental-tracking-explains-similar-features
Randy J. Guliuzza, P.E., M.D. - Darwin’s followers appear to be comfortable embracing totally contradictory explanations for the same thing. When diverse groups of organisms share nearly identical traits, evolutionists see that as solid evidence of descent from a common...

/article/stick-spider-adaptation
Randy J. Guliuzza, P.E., M.D. - A long-standing evolutionary argument is that creature diversity is essentially a random process. But new discoveries increasingly show serious flaws in this claim and are highly consistent with a design-based framework. The findings support the...

/article/selfish-gene-metaphor-misleads-evolutionists
Randy J. Guliuzza, P.E., M.D. - A recent opinion piece posted on the Chemistry World website1 notes that Richard Dawkins’ 1976 book The Selfish Gene deeply motivated a generation of biologists to adopt a gene-centered framework to explain why biological phenomena seem to...

/article/engineered-adaptability-creatures-adaptability
Randy J. Guliuzza, P.E., M.D. - What grabs our attention when we watch living creatures? Action! We lock on to their active responses. Or, as techno-lovers would say, “their outputs.” But without detectors, or “inputs,” there would be no response. As we...

/article/common-design-common-descent
Randy J. Guliuzza, P.E., M.D. - Humans’ and chimpanzees’ many similar features are presented as one of the strongest evidences for evolutionary theory. But do these traits tell the story of evolution from an ape-like ancestor? What about the alternative view of...

/article/body-temperature
Randy J. Guliuzza, P.E., M.D. - The 2018 Winter Olympics have arrived! Have you ever wondered how athletes can be out in the frigid temperatures and still sweat after finishing their events? Dr. Randy Guliuzza highlights the exquisite control mechanisms that balance body...

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