CHICAGO (WLS) -- Graupel is a type of precipitation that falls in the winter time when conditions are just right. It's not often we see it. Graupel are small, soft pellets almost like what you ...

Here's an explanation of how freezing rain and sleet form. Sleet forms in winter storms, while hail is a warm-season type of precipitation. Snow occurs when the atmosphere is "cold" all the way ...

Letter Published: 16 November 1963 Formation of Peroxidic Precipitate in the Radiolysis of Uranyl Nitrate Ketone Solutions JIŘÍ TEPLÝ & VÁCLAV ŠTULÍK Nature 200, 671–672 (1963) Cite this ...