Did you know? Time since the birth of Ada Lovelace (207 y) is 5 x Time since first IBM Personal Computer launched (41 y) Tweet this comparison
Width of a typical Hot Air Balloon (15 m)
/fact/width-of-a-typical-hot-air-balloon
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If this was a standard unit ...
"This is a fun and riveting book. Written in an accessible and engaging way, it is unputdownable." Frost Magazine
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