08.10.2010 Hint: First it flopped. Then it megaflopped.
Hint: It's actually something you might have lying around the house. 08.02.2010
Hint: It makes your hard drive work and also makes pretty colors in the sky. 05.18.2010
Hint: Its tannin content can poison horses, and the flower-like things are actually hairy appendages. 04.28.2010
Hints: John Glenn had one on his historic flight. The colors were added to distinguish distance from the camera. 03.08.2010
Hint: It's actually a lot closer to home than some exotic cave. 02.18.2010
Hint: These plates cover a creature that's flat and round—hence its name. 12.08.2009
Hint: There are a lot fewer of them now than there were a few years ago. 11.18.2009
Hint: It's actually not on the ground, nor in the oceans, but up in the sky—way up in the sky. 10.21.2009
Hint: It's hard as granite, strong as steel, and has been used for sword grips and shoe soles. 10.05.2009
Hint: It represents a best-selling piece of literature. 08.24.2009
Hint: It dates back to 6th-century China but never really caught on until the mid-1800s, when it was introduced in its packaged, modern form. 06.19.2009
Hint: It's related to the rose and can put the "white" back in your pearly whites. 05.06.2009
Hint: To forensic technicians it's a valuable timer; to medical doctors it's a defense against infection. 04.25.2009
Stay away: these poofy blobs are actually quite deadly. 03.09.2009
It may look like a worthless rock, but it can be encrusted with diamonds or used to find black gold. 02.05.2009
Actually, you'd be more likely to see this pattern in your wine glass. 01.14.2009
It's not a flower, but it does get its nice looks from photosynthesis. 12.23.2008
There's no candy hidden in these, but they do hold other secrets. 11.05.2008
10.07.2008
Not quite—but some people pretend it is. 09.03.2008
Hint: It was originally developed to treat hypertension and angina. 08.01.2008
Not quite, but you will find plenty in a locker room. 07.03.2008
Here's a hint: You probably ate some at breakfast. 06.02.2008
Here's a hint: It's part animal, part vegetable, and a smidge mineral. 05.05.2008
The "devil's darning needle" hunts by sight. 04.02.2008
These growths may look like little volcanoes, but they are are nothing of the sort. 03.02.2008