A rolling robot is helping scientists to observe and record penguin behavior.
Reference Geiger counters use the natural process of ionization to detect and measure radiation levels
Reference Discover the facts about light pollution and its impact on the environment and our health.
Reference The term “amoeba” refers to simple eukaryotic organisms that move in a characteristic crawling fashion.
Reference Mermaids — legendary half-human, half marine creatures — have fascinated people for centuries and inspired many "sightings."
Reference The sympathetic nervous system activates the "fight-or-flight" response, quickly readying the body to handle dangerous or stressful situations.
Reference Humans have invented six devices that combine to make work easier. These six simple machines are the wheel and axle, the lever, the inclined plane, the pulley, the screw and the wedge.
Reference How can red mean love AND war? Why is purple royal? Life's Little Mysteries answers these questions and more.
Reference The lymphatic system helps rid the body of toxins. Diseases of this system include lymphadenopathy, lymphoma and other disorders.
Reference Learn about the many differences between prokaryotic and eukaryotic cells and how they evolved.