Mothers more likely to have twins have heavier, healthier non-twin babies, possibly explaining why twinning evolved.
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Pro-evolution bumper stickers and emblems are being removed from the cars of biologists in Florida.
Fisheries scientist ordered to refuse interviews about research on salmon decline.
Like many fish and amphibians, the Guiana dolphin can sense low levels of electrical activity in the water—an ability not previously reported in true mammals.
People living in near the Earth’s poles, where days are often short and light often low, have larger eyes and visual cortices than those closer to the equator.
Non-African people carry remnants of the Neanderthal X chromosome, suggesting interbreeding with early human ancestors.
The deadly-when-eaten invasive amphibians that have been plaguing Australian wildlife for years continue to poison even after they’re dead.
United Nation officials declare rinderpest the first animal disease to be fully eradicated.
Evidence that large dinosaurs had body temperatures similar to modern-day mammals suggests they were either endothermic or extremely good at conserving body heat.
A particular predator defense used by water fleas makes them more susceptible to parasite infections, new research shows.
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