African clawed frogs used to be the best human pregnancy tests in the world. Doctors would inject a woman's urine into the back of a female frog; if positive, the frog would lay eggs. Frog or ...
ZME Science on MSN27d
Human Urine and Frogs: How a Bizarre Pregnancy Test Helped Unleash a Global Amphibian CrisisIt’s known for its ability to show whether a woman is pregnant. How? Well, by injecting a woman’s urine into the frog’s skin, ...
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Pregnant creature with gold, lace-like eyelids found near river. It’s a new speciesIn a mountain forest of Papua New Guinea, a pregnant creature perched on some leaves near a stream and scanned the area with solid black eyes. But it wasn’t the only one looking around.
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