Composed of a single cell, amoeba seem harmless enough: They look like playful critters waltzing under the spotlight of a microscope until they come upon a group of bacteria. Then, these previously ...

The amoeba was discovered at a hot spring in California's Lassen Volcanic National Park. Credit: Dukas/Getty Images A newly discovered single-cell amoeba has broken the temperature record for ...

This cell likes it hot. A tiny, single-celled amoeba that can thrive at temperatures that kill all other known complex life — organisms whose cells contain a nucleus and internal structures — has been ...