Landmarks is a series of brief, lay-language stories about seminal papers from the Physical Review archives. The latest story describes the invention of the cyclotron, which made its debut in a 1931 paper by Ernest Lawrence and Stanley Livingston.
Published by the American Meteorological Society, the Glossary of Meteorology explains more than 12 000 terms used in weather and climate science—from “AABW” (an abbreviation for Antarctic bottom water) to “Zürich number” (a measure of sunspot activity).
On 1 July, after a seven-year journey, the Cassini–Huygens spacecraft crosses the plane of Saturn’s rings and enters orbit about the giant planet. You can learn more about the mission and track its progress on the mission’s extensive, multimedia Web site.
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