At the Macau Tower jump in China, daredevils plummet toward the ground from nearly 800 feet in the air (most jumps fall in the low hundreds).

在中国澳门旅游塔跳，勇者从约800英尺的高空暴跌到地面(最低跳跃几百下)。

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If I jump from a tower which is 100 meters high I will be weightless for 4.5 seconds ignoring air drag.

如果我从100米的楼上跳下去，无重量时间大概是4。5秒，忽略空气阻力不计。

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I can jump higher than the Eiffel Tower!

我能比艾菲尔铁塔跳得还高！

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Bill DeMong says that growing up in Lake Placid, New York,with the 26-story tall large hill jump tower on the horizon, he was always exposed to the sport.

VOA: standard.2010.01.31

You could even pledge enough money to base jump from the top of the tethered research tower, which will be held aloft by helium balloons.

ENGADGET: Liftport turns to Kickstarter for space elevator experiment (video)

The way the Dogpile worked was whomever was not the poor sap whose named was shouted out, would proceed to jump on top of him and work to create a tower of humanity with the unfortunate Dopile-ee at the bottom of the heap.

FORBES: Dogpile On Social Media