Scientists warn that free-living amoebae may be an underappreciated public health threat, capable of causing deadly infections and shielding other dangerous microbes from water treatment. Climate ...

Much more difficult is learning to connect different types of stimuli or events, and predicting that one is linked to another. Such associative learning was most famously demonstrated when Ivan Pavlov ...

Here’s what you’ll learn when you read this story: The bacterial species Deinococcus radiodurans is a super-extremophile that can survive anything from extreme temperatures and radiation to the ...

Some single-celled organisms are known to transition to multicellularity during their lifetimes, usually either by cloning themselves or when many similar cells come together to form a larger ...

Some fungi, particularly species in the order Mucorales, can change from one form to another by changing what genes they express. Mucor lusitanicus will take the form of yeast in anaerobic ...

Self-affirmation theory was proposed by psychologist Claude Steele in the late 1980s and remains popular today. The theory suggests we have a deep desire to craft a personal narrative that we are ...

Unicellular organisms show surprising complexity In a paper appearing in Nature Genetics, researchers discover that in more "primitive" unicellular organisms, both the adenine and the cytosine bases ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. The U.S. is witnessing a troubling rise in infections caused by ...

Hold your nose — and maybe hold off on that beach day. More than 60% of U.S. beaches tested in 2024 had at least one day where the water was so full of fecal bacteria that it failed federal safety ...

Lurking in our nonstick pans, our rain jackets and even our drinking water are toxic compounds known as perfluoroalkyl and polyfluoroalkyl substances (PFAS), also called “forever chemicals.” They can ...

A lot of us have trained ourselves to expect the worst—not because we want to be pessimists, but because figuring out how to be more positive often feels like an abstract concept, tied to forced, ...