The Mineral Encyclopedia Gadget and escape room-style gameplay

and escape room-style gameplay

making work easier to do

astronomer Tyler Nordgren illustrates how this most seemingly unnatural of natural phenomena was transformed from a fearsome omen to a tourist attraction

This entry-level refractor telescope invites curious explorers to look beyond Earth and begin observing the night sky with clarity and confidence

The Mineral Encyclopedia Gadget and escape room-style gameplayMineral collecting by amateur "rockhounds" has never been more popular. Old quarries, road cuts, and exposed landscapes are being examined by new generations of minerals enthusiasts. Each needs a comprehensive guidebook with clear photographs and accurate data. This is it. In a thick but handy format, more than 700 different minerals and rocks are grouped by color (for ease of location in the book) blue, red, yellow, brown, green, white and black