How fast does the earth spin?

One characteristic of a scientific theory is that... A) It can never be tested B) It explains a set of observations C) It ...

Can you imagine going inside the earth from under it? How would that be?? Would you like flip rightside up??lol

What are some effects of a magnetic reversal on earth that is possible in 2012?

Me and my partner need an expirement pronto!!! The scince fair is this week and we are in desperate need of an earth science ...

It is known that the earth's magnetic field reverses every few millenia. was there any mass extinctions or anything that hap...

Okay, I know about gravity and stuff but like how doesnt the earth fall! it scaresss me! and like how people say its going to...

We all know the earth is spinning, but how fast? And we dont get throwen off because of gravity, so shouldnt we all be being ...

If I send a message from mars.How long before some one responds from Earth?

Does the sun move around the earth or does the earth moves around the sun???

At present I beleive that Land covers about 25 percent of the Earth. I have heard how Dubai is making so many large artifiic...