3rd February 2003, 7:16 AM
I think the coolest idea for space travel is that huge slingshot idea. Basically, we'd build a HUGE tower that extends really far out, and then the earth's rotation gives it extra speed as it slides to the end. Finally it reaches the end, and POOF! it's in orbit! Or something.... I saw it on HowStuffWorks.com... great site.