When I was a kid, I liked to dig holes in my backyard in Cincinnati. 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 ...
When I was a kid, I liked to dig holes in my backyard in Cincinnati. 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 ...
Advert Pressure is another factor making digging a hole to the centre of our planet difficult, with any tool used needing to be able to withstand the weight of '6.6 sextillion tons of rock ...