The world record right now is 6.14 meters or 20.144 feet.  I personally don't think they can go over 21 feet.
125339
Someone will eventually.
553910
The biggest number in the world actually doesn't have an end.  It is called "infinity".
88897
I don't think there is an altitude limit... in any case I don't think you are going above 4000 meters... they should be ok...
374203
I would say that the most impossible part is when they enter the giant geode. If they were heading towards the center of the earth than when they entered the geode they would enter at the top and fall probably for hundreds of miles and die on impact. Also Giant Geode though a cool thought yeah right.
278015
The following is a quote lifted from a paper called the Register Guard\nHope this clears it up for you\n\nWebb, who has been receiving treatment for an injured right hamstring in recent weeks, nearly came to a complete stop with 130 meters to go, clutching the back of his right leg. He finished in 4:00.87 and was unavailable for comment afterward.
615244
Nothing.  It's just a nice round number for people to use.  There are a reasonable number (54) of mountains higher than 14,000 but none 15 or higher.  So, that gives people a nice achievable goal with good heights above the treeline.
269813
Haven't people seen on the news where the illegals are jumping over walls and fences? I can still jump over a fence lol. I'm going to go and jump over my neighbors fence right now, lol. You would need Border patrol every few feet to catch them by the feet and pull them down, lol. Does anyone know how many miles we are talking about? At night, its really not easy to see how fast they jump over, lol. Boy, and these are the people in charge of National Security, lol. Have they heard of the word "ingenious"? For human survival and desperation, a fence? lol. Sorry, I just can't stop laughing here.
558071
come over and see if we can beat the record
425699
More  than 20 minutes
252398
http://www.usa-gymnastics.org/news/2005/oct12-05miller84mensteam.html. This page answers the question fully
168885
I was in India during those pesky bomb testings back in 1998.   At that time they didn't have long range capacity.  Sounds kind dumb to shoot a 10 megaton 200 miles.  Maybe they have it figured out now?
291270
I forgot what the longest time from 12 was, but with USSR eased off, it should be max right now.\n\nI have not seen the clock lately either.\nLooks like 7 min till 12 is what it is on. 2006
78186
I'm not sure if the sea level rise is that dramatic. There are a lot of different predictions being bandied about. The estimate from the telegraph is that there will be a 20ft rise by 2600. The rise this century is expected to be about 1m.
463266
Actually, this was surpassed by Ryan Capes at a distance of 310' 4". You can see video of this here: \nhttp://www.nbc4.tv/news/5216306/detail.html
300428
1 foot=0.3048 meters. ok?
269557
Stories:  102 \nHeight: 1,250 ft
450326
200 ???? !!!!  Wow!\nThey couldn't handle that kind of pressure. \nI'll wait with you to hear just one !!!