Amazing Facts Most People Don't Know
Electric vehicles are so quiet that they have systems to generate artificial engine sounds for safety.Source
![post thumbnail background image](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgPvuSagNP6efLhWRDkflSb-lFuahfBRSkStJY6N9YTktMlBB9cKD6tPbGTsslhJw32DYL_E6kpRurk0BW02U5uRYT-A016aFPa_7IjE43QdP69iuSrMjrjKktkpjr205MOd_0IaVD-IV0/w280/fact-about-Electric-vehicles.jpg)
Astronauts can grow up to 2" taller during their time in space due to the elongation of their spine in microgravity.Source
![post thumbnail background image](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiM2RKq3lnL9beQJE2SVIZ6xXYWg0_aoSJ9snMldE9nRTAP4y8AH9dd7znBrpV48sufBvdNSNXElQ4hQP_nHBpvCk3yFxJ2XQhUCKSZ8ONmCouKmaWreyWNvS1DxAw3ngJJidZ3IhfWJsA/w280/fact-about-Astronaut-growing-up.jpg)
In Japan, '39' is common text speak for 'thank you', due to how 3 (san) and 9 (kyu) sound when spoken out loud.Source
![post thumbnail background image](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiA45mZPxMzVPrPVZKr5JBJMN5WsJTM7rndd8CsQBKleYDcS0Z5vY4LlXPwESZ96c2OB6H5wLoUjh34jFtrcbRHjdPthGsBsmCdbx0YG5MFRH8Uuj0HPrnNj4ntcwQhHczrXO1S2PXUfhc/w280/fact-about-Japan-common-text-speak.jpg)
During the Cold War, CIA agents used a method of communication based on how their shoelaces were tied.Source
![post thumbnail background image](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgJXxKpLXh396Q1NOJXlt_pmKT8huF7QNi8VSSJfJMkNViFjuKrHyisy1tXE-Ilx1segwQcQ6tGp2qoXZ2VIaK8RgN3QI_7GdIc30kjC5JjLi4PUXJ5rY9MWEaNZJc7aqteS4x56NuGhGo/w280/fact-about-CIA-agents-shoelaces-communication.jpg)