What's this have to do with time travel, well it may be a precaution to look for just in case it's ever achieved. To start with my explanation we need to do some chemistry: When two certain chemicals mix and are combined with an object, that object immediately petrifies. For example: a ten year old tree is combined with these chemicals and is petrified. Now with the technology of carbon dating, it will tell us the petrified tree is really a century old. However, we know that that is not true. In the instance I think the carbon dating of the earth is off due to my theory of what killed the dinosaurs. Tell me if you have ever heard of this-that there once was a canopy of some unknown elements surrounding the earth. This canopy caused the earth to be pressurized which is why creatures supposedly in the time of dinosaurs are so large. Kind of like how Georgia and the southern states of the US, where the humidity is out of hand, have very large insects where as places not so humid don't. I believe that back in the day the canopy broke and down came these elements which immediately petrified everything. And now since use carbon dating to determine age we get some rediculous number like 65,000,000 years. I don't have much support for this idea, but I find it very plausable. What do you thinki.