Learn what hydrothermal vents are, how they form, their types, chemosynthetic life, origin-of-life theories, and deep-sea exploration.Hydrothermal Vents – Formation, Types, and Life Recently updated !
Hare vs rabbit: Learn the key differences in appearance, behavior, habitat, offspring, survival strategies, and more. Hare vs Rabbit – Difference Between Hares and Rabbits Recently updated ! This entry was posted on September 2, 2026 by Anne Helmenstine (updated on September 2, 2026)
Use this rock identification guide to identify common rocks by texture, grain size, hardness, composition, and other properties. Rock Identification Guide – How to Identify Rocks Recently updated ! This entry was posted on September 1, 2026 by Anne Helmenstine (updated on September 1, 2026)
Learn about the kingdoms of life in biology. See the taxonomy for five and six kingdoms and get examples of organisms and characteristics. Kingdoms of Life in Biology Recently updated ! This entry was posted on February 19, 2022 by Anne Helmenstine (updated on September 6, 2026)
A solute is a substance dissolved in a solvent to form a solution. Learn how to identify solutes and see common examples. What Is a Solute? Solute Definition and Examples Recently updated ! This entry was posted on June 9, 2020 by Anne Helmenstine (updated on September 6, 2026)
Relative humidity explained, including its definition, formula, measurement, dew point, psychrometric tables, and sling psychrometers. Relative Humidity – Definition, Formula, and How to Measure It Recently updated ! This entry was posted on August 29, 2026 by Anne Helmenstine (updated on September 6, 2026)
Learn what Lagrange points are, how L1 through L5 work, their stability, physics, spacecraft uses, and Trojan asteroids. Lagrange Points – Definition, Types, and Uses Recently updated ! This entry was posted on August 26, 2026 by Anne Helmenstine (updated on September 6, 2026)
Squid vs octopus: Learn the key differences in arms, tentacles, body shape, habitat, behavior, diet, eggs, and more. Squid vs Octopus – What’s the Difference? Recently updated ! This entry was posted on August 25, 2026 by Anne Helmenstine (updated on September 6, 2026)
Learn what smog is, how it forms, types of smog, causes, health and environmental effects, and ways to reduce air pollution. Smog – Definition, Types, Causes, and Effects Recently updated ! This entry was posted on August 22, 2026 by Anne Helmenstine (updated on August 30, 2026)
Learn about the Michelson-Morley experiment, its setup, null result, importance, and connection to special relativity. Michelson-Morley Experiment – Explanation and Significance Recently updated ! This entry was posted on August 19, 2026 by Anne Helmenstine (updated on August 30, 2026)
Learn how the phosphorus cycle works, including its steps, reservoirs, importance, human impacts, and role in aquatic ecosystems. Phosphorus Cycle – Definition, Steps, and Diagram This entry was posted on August 18, 2026 by Anne Helmenstine (updated on August 23, 2026)
Learn the four quantum numbers, their allowed values and rules, and how they relate to orbitals and electron configurations. Quantum Numbers – Definition, Rules, and Examples This entry was posted on August 15, 2026 by Anne Helmenstine (updated on August 23, 2026)