What's the tallest THING we've ever built? How tall will we EVER be able to build?
This is a pretty impressive breakdown on the tallness of buildings and how high we can eventually build things some day soon.
Both parents and kids should be able to approve of the sites linked below.
What's the tallest THING we've ever built? How tall will we EVER be able to build?
This is a pretty impressive breakdown on the tallness of buildings and how high we can eventually build things some day soon.