Discover the most dangerous element on the periodic table, in terms of radioactivity, toxicity, and reactivity. Most Dangerous Element on the Periodic Table This entry was posted on January 16, 2024 by Anne Helmenstine (updated on March 9, 2024)
Learn about homeostasis in biology. Get the homeostasis definition and examples and see the importance of these processes in the human body. What Is Homeostasis in Biology? Definition and Examples This entry was posted on January 14, 2024 by Anne Helmenstine (updated on May 30, 2026)
Learn the basics of acid-base chemistry. Get the definitions and examples of acids and bases and learn about the neutralization reaction. Acid-Base Chemistry This entry was posted on January 13, 2024 by Anne Helmenstine (updated on February 15, 2026)
Get the mass definition in science. Learn what mass is, how it differs from weight, and how it applies to scientific laws and formulas. What Is Mass? Mass Definition in Science This entry was posted on January 10, 2024 by Anne Helmenstine (updated on March 4, 2025)
Learn about the fine structure constant in physics. Discover how it gets its name, its value, and its importance. Fine Structure Constant This entry was posted on January 9, 2024 by Anne Helmenstine (updated on January 13, 2024)
Get interesting yttrium facts. Learn about the discovery, uses, and sources of the element with atomic number 39 and symbol Y. Yttrium Facts – Element Symbol Y or Number 39 This entry was posted on January 7, 2024 by Anne Helmenstine (updated on May 24, 2025)
Learn about subatomic particles in physics and chemistry. Discover subatomic particles in an atom and fundamental or elementary particles. Subatomic Particles This entry was posted on January 6, 2024 by Anne Helmenstine (updated on January 13, 2024)
Get the size of planets of the solar system in order from smallest to largest in kilometers, miles, and relative to Earth. Size of Planets in Order This entry was posted on January 3, 2024 by Anne Helmenstine (updated on January 20, 2026)
Learn about the carbon cycle. Get its definition, see the steps involved, and discover why the carbon cycle is important. The Carbon Cycle This entry was posted on January 2, 2024 by Anne Helmenstine (updated on November 18, 2025)