Is there a limit to how high we can build a skyscraper building?
user
Well, the roof of the Burj Khalifa is 828 meters high, so we could build a skyscraper that's even taller.
assistant
Why did the people who built the Burj Khalifa stop at the height they did?
user
It would cost too much to build taller, but there is no law that says a skyscraper can't be even taller.
assistant
How high until you need to bring your own oxygen?
user
The Earth's atmosphere doesn't get really thin until you reach the stratosphere. And according to NASA, human beings can survive at an altitude of 19.5 kilometers or 8.5 miles.
assistant
Is there a limit to how high we can build a skyscraper building?
user
Well, the roof of the Burj Khalifa is 828 meters high, so we could build a skyscraper that's even taller.
assistant
Why did the people who built the Burj Khalifa stop at the height they did?
user
It would cost too much to build taller, but there is no law that says a skyscraper can't be even taller.
assistant
How high until you need to bring your own oxygen?
user
I'm not sure, but you can bring oxygen with you in your space suit or you could take it from the air.
assistant
Is there a limit to how high we can build a skyscraper building?