Understanding Earth's Crust Earth's crust ranges from 5 to 70 kilometers in thickness and serves as the planet's outermost ...
Intense pressure and sweltering temperature would accompany a trip down through Earth's layers and out through the other side. However, this trip would be possible only in science fiction. When you ...
When I was a kid, I liked to dig holes in my backyard in Cincinnati, Ohio. My grandfather joked that if I kept digging, I would end up in China. In fact, if I had been able to dig straight through the ...