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TIL of the Yamato 1, the first working prototype boat to use a Magnetohydrodynamic drive (MHD). Built by Mitsibishi, the ship’s drive electrifies sea water and utilizes magnetic fields to propel itself. The MHD uses no moving parts.

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p8rMN TIL the first 'talking car', the 1982 Datsun 810 Maxima, stored its voice messages ("lights are on", "left door is open", "fuel level is low", etc.) on a 3-inch, shock-resistant, plastic phonograph record.
PlVG TIL The KEO Time Capsule, which will be launched in 2014, will re-enter Earths Atmosphere 50,000 years from now. The cool thing is that everyones invited to submit their own 4 page letter.
7r7MX TIL During the summer of 1988, Canadian marathon swimmer Vicki Keith swam across all 5 Great Lakes to raise money for charity, covering a total of 253 kilometres (157 miles) in 160 hours and 22 minutes over a two month period.
X6oQ TIL An 18 year old freshmen funded his education by asking 2.8 million people for one penny.
ZpYRR TIL based on fossil and biological evidence, most scientists accept that birds are a specialized subgroup of theropod dinosaurs.