Science

There is no single scientific name for every coral snake: “coral snake” is a common name for several groups of venomous snakes. In the Americas, many coral snakes belong to the genus Micrurus, while other coral snakes belong to related genera; the exact scientific name depends on the species and region. Why “coral snake” has […]

Birds often praised for especially beautiful songs include the nightingale, common blackbird, song thrush, wood thrush, hermit thrush, common canary, and lyrebird. There is no objective winner: the songs people find most beautiful differ in tone, rhythm, complexity, and cultural familiarity, and each bird’s performance serves practical purposes such as attracting a mate or defending

Animals around volcanoes survive by avoiding dangerous areas, moving when conditions change, and using traits suited to the local heat, terrain, and food supply. Some species tolerate volcanic landscapes especially well, but no animal is immune to eruptions, toxic gases, ash, or sudden habitat loss. What Makes Volcanic Habitats Different? A volcano is not one

Animals in tropical rainforests survive through adaptations that help them find food, avoid predators, move through dense vegetation, and cope with warm, wet conditions. These traits include specialized bodies and senses, particular behaviors, and relationships with other organisms; no single adaptation works for every species or every layer of the forest. What makes rainforest life

The heat index is calculated from the air temperature and relative humidity using an empirical formula designed to estimate how hot conditions feel to people in the shade. The U.S. National Weather Service generally uses a regression equation based on laboratory heat-stress data, with adjustments for conditions in which the basic estimate needs refinement. What

To design a wireless power transfer system using magnetic fields, build a transmitter coil and a receiver coil that exchange energy through a changing magnetic field, then tune, control, and protect the circuit for the intended gap and load. Begin by defining how much power the load needs, how far apart the coils will be,

Mass is calculated by measuring how much matter an object contains, most commonly by comparing it with a standard mass on a balance. In physics, mass can also be calculated from other measured quantities, such as an object’s weight in a known gravitational field or its density and volume. What mass means Mass is a

Eddy currents can reduce the efficiency and accuracy of magnetic induction devices by turning some useful electrical energy into heat and by opposing changes in magnetic flux. They can also be useful: controlled eddy currents provide braking, damping, heating, and ways to detect or measure conductive materials without contact. What Eddy Currents Are An eddy

Slash-and-burn agriculture is a farming method in which vegetation is cut and then burned to clear land and add ash to the soil. It is often used as part of shifting cultivation: farmers grow crops on a cleared plot for a limited period, then leave it fallow while cultivating another area. What the term means

Three examples of arthropods are a spider, a butterfly, and a crab. They belong to different groups, but all share a segmented body, jointed limbs, and a tough external skeleton that supports and protects the body. What Makes an Animal an Arthropod? Arthropods are invertebrates: animals without a backbone. Their name refers to their jointed