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TIL The USAF and later Atomic Energy Commission tried to develop a nuclear propulsion system for aircrafts between 1946 and 1961 at a total cost of about $1 billion. Two of assemblies, consisting of a reactor and two modified turbojets each, is on display at Idaho National Laboratory.

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J16rm TIL the Death Camas plant is so toxic that there is only one known pollinator. The plant is visited by a specialist mining bee, which can tolerate its toxins - others are fatally poisoned. One plant species name is Toxicoscordion venenosum var. venenosum ≈ toxic bulb poisonous poisonous.
W70kX TIL There is an Airlines Special Service Request code called DPNA which alerts airlines that a passenger with intellectual or development disability is travelling and would need special assistance/attention. This code was introduced by IATA in 2008, but many are not aware of it.
K06E TIL Reddit is worth an estimated $3,205,000,000
R5d18 TIL about Arrow Air Flight 1285, a charter aircraft that crashed on takeoff in Gander, Canada. Killing 248 (+8 crew) US Army soldiers returning from a peacekeeping deployment. Prob Cause: thin ice/extra weight leading to stall.
1a4dV TIL that United Airlines operated daily "men only" flights between New York and Chicago from 1953 to 1970