there has been alot of changes in the recently but i think that is going to stop soon. in about 50 years or so most of the natural gas we use to do simple things in life will be gone. we used it up too fast. today it is still being used for useless things like nascar and in my opinion NASA. what is outer space going to matter in a few hundred years when we can't even get off the planet. we might be back to the horse and buggy but thats a little too far. i think the only drastic changes happening won't be good changes.