There’s a frisson you get when you meet a word for the first time—feeling pleasantly stumped in between wondering, “What the heck does that mean?” and hurrying off to find out. Martha and Grant talk about some terms that had just that effect on...
Why are cave explorers called spelunkers? How do you pronounce the word? A naturalist at Mystery Cave in Minnesota wants to know and in return she tells us how to tell a stalactite from a stalagmite. This is part of a complete episode. Transcript of...