Portal:Science/Did you know/3


 * ...that silica aerogel (pictured) holds 15 entries in the Guinness Book of Records for material properties, including best insulator and lowest-density solid?
 * ...that acoustic levitation is a method for suspending matter in a fluid by using acoustic radiation pressure from intense sound waves in the medium?
 * ...that the genus Entomocorus includes a catfish species that lives only one year?
 * ...that a successful experimental system must be stable and reproducible enough for scientists to make sense of the system's behavior, but unpredictable enough that it can produce useful results?
 * ...that Abbott Lawrence Rotch established the Blue Hill Meteorological Observatory in 1885, which maintains the longest-running meteorological record of any observation site in the United States?