The answer: tropotaxis, or a "surround sound" tongue
Tropotaxis simply refers to the targeted following of chemical cues by an organism, I think.
I was asked a few days ago why snakes have forked tongues. It was asked by a kid, and was probably an idle question, unimportant to the person, and quickly forgotten. At least, to them. I puzzled and fumed and googled.
So, here it is. Science really isn't sure, but the accepted proposed idea is that a forked tongue gives snakes (and other reptiles, like Komodo dragons) a larger surface area to the tounge, allowing their sense receptors greater comprehension, and especially a better ability to sense direction of chemical traces in the air.
The principle to surround sound applies to the "tasting" of the air, too, soundwaves notwithstanding.
Well, I found it fascinating.
Oh, incidinetly, snakes and monitor lizards (such as the Komodo) are closer cousins than other lizards. I found that interesting, when considering their similar oral qualitities.
And oh, again, I misspelled "tounge" all throughout this blog, and had to keep correcting myself.