How does hail form, and how is the size of a stone described?

Gargantuan hail is something you likely have never heard of. This type of description for hail is reserved for only the biggest stones. Severe warnings for hail start at a quarter-sized hail, and ...
news.ucsc

Scientists explain formation of stone circles and other strange patterns in northern regions by simple feedback mechanisms and self-organization

Perfect circles of stones cover the ground in parts of Alaska and the Norwegian islands of Spitsbergen. Elsewhere in the far north, stones form other striking patterns on the ground: polygons, stripes ...
Ars Technica

Mathematicians may have unlocked the secret of how “stone forests” form

There are many wondrous geologic formations in nature, from Giant’s Causeway in Ireland to Castleton Tower in Utah, and the various processes by which such structures form is of longstanding interest ...
Republican Herald

Preventing kidney stones before they form

Kidney stones are small, hard deposits made of minerals and reoccurring materials inside the kidneys. Stones often go unnoticed in the kidney until they move into the ureter – the tube connecting the ...