Narrator: If you're hiking pretty much anywhere in the US, this is one sound you don't want to hear... [Audio of rattlesnake rattle.] The warning of a rattlesnake. Now, just because a rattlesnake ...

Your chain should also be the first thing you check if you hear a rattling sound while riding. It could mean the loose, excess chain is contacting your frame (this is commonly called “chain slap ...

Then you hit the pavement and the rattling starts. Maybe you couldn't hear it on the unpaved road, but every expansion strip on the Interstate makes your car sound like a tin can full of bolts.

Scientists based in Germany and Austria found that western diamondback rattlesnakes (Crotalus atrox) quickly ramp up their rattling frequency when a potential threat appears to be getting closer to ...