Today's meteror can be tomorrow's (star) dust. Feb. 19, 2013 -- Meteorite hunters are converging on Chelyabinsk, Russia, seeking pieces of a space rock that exploded above that city last week, ...

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

For the first time in 23 years, Geoffrey Notkin isn’t gearing up for Tucson’s massive gem showcase. Notkin, owner of meteorite company Aerolite Meteorites, started attending the gem show first as a ...

Editor's note: This story was originally published in February 2021. Tucson's massive Gem, Mineral & Fossil Showcase recently came to a close, but that doesn't mean the shopping for rocks, gems and ...