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Let's Get [Thankful for the] Physical

Wonders of the human body continue to pour forth from scientific research, providing more reasons to give thanks.

Sex Cells: The Evolution (or Design) of Genitalia

There's been a lot of news about sex organs in recent days. Which does a better job of explaining the facts of life: design or evolution?

Sperm Cells Gain Respect

Millions of tadpole-like sperm cells rush to fertilize one egg. They deserve more respect than they often get.

News for the Birds

Our human readers are allowed to peek in on these headlines for and about our feathered intellectuals.

Ethical Stem Cells Can Be Used Unethically

Induced pluripotent stem cells allow researchers to ethically create any cell type from an adult cell, raising hopes for regenerative medicine. Eyebrows started to raise recently, though, when labs grew brains with them and turned others into sperm and egg cells.

Animal and Plant Tricks

There's no end of amazing tricks in the living world – adaptations that aid their success. Finding them is one thing. Explaining them is another.

Felicitous Fossils Facilitate Phylogenetic Fabling

Here are some recent fossil finds that, whether they fit or not, are claimed to shed light on evolution.

Cheetahs Prosper with Rear-Wheel Drive

Learn about how cheetahs accelerate from 0 to 60 in 3 seconds, and other wonders of the living world.

Birdifying Dinosaurs

Birds and dinosaurs have oval eggs and big eyes. Does this necessarily mean they evolved from a common ancestor?

Dinosaur Fossilized in the Act of Laying Eggs

Two eggs, with shell material still attached, were found inside the oviducts of a theropod dinosaur, a Chinese team reported in Science.1  This first-time discovery of intact eggs in the body of the female “suggests that theropod dinosaurs had two functional oviducts (like crocodiles) but that each oviduct produced only one egg at a time […]
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