› added 1 year ago

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TIL that US "Gold Star" next-of-kin are eligible for lifetime free access to all National Park Service parks

Read more nps.gov

via reddit.com

4Xxko TIL about the 100 Year Starship, a joint DARPA and NASA project that aims to discover the technology necessary for interstellar travel within 100 years.
AwWB TIL it would take 375,000 2x2 LEGO bricks stacked on top of each other to break the bottom brick
jQmM TIL that only once in history has one submarine deliberately sunk another submerged submarine
jNY6E TIL We are milking the blue blood from the 450.000.000 year old Horseshoe Crab for medical use while they are in danger of going extinct.
BgpAb TIL that train rails are transported in bundles of 1/4mile long pieces that are so long they must bend with their freight train around corners.