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Tapeworms can kick parasitism up a notch to become cancer, a case in Colombia shows.
People are surrounded by a personal cloud of bacteria.
The Rosetta spacecraft caught five circular depressions quickly spreading across a region of comet 67P.
Madagascar primates yawn within minutes of encountering threats.
A wild bearded capuchin monkey in Brazil was caught using tools to pick its nose and teeth.
Unlike spoken words, language made of whistles processed by both sides of the brain.
An arched shell helps a six-legged robot shimmy past obstacles.
Hallucigenia sparsa gives hints to how some animals ended up with teeth in their guts and platelike pieces around their mouths.
Warm Neptune-sized exoplanet might have atmospheres filled with helium.
Zoloft and a heart drug keep most mice alive after exposure to Ebola.
Unlike other vegetarians, the bamboo eaters lack plant-digesting microbes.
Tampons soaked in polluted water glow under UV light, revealing detergent-filled wastewater in rivers.
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