› added 6 years ago

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TIL the commonly-acknowledge health goal "10,000 steps a day" has no real medical merit other than walking is good for you and it's a well rounded number.

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OpmX TIL that in 1975, physicist Kip Thorne bet Stephen Hawking one year of issues of Penthouse Magazine that black holes exist. Thorne won.
KOykG TIL: The Bradley Effect is when voters give inaccurate polling responses out of fear of stating their true preference. Members of the public may feel under pressure to provide an answer that is deemed to be more publicly acceptable.
Zojv TIL Vulcan Point is an island on a lake, on an island on a lake, on an island.
Lra0 TIL JD Salinger never relinquished rights for audiobooks. The only legal way to obtain a Catcher in the Rye audiobook, is to have “permission” from a physician or ophthalmologist to listen to a “legal audiobook” recorded for the Library of Congress, who can do so by law, but only for the blind.
4bAb TIL all steel produced after 1945 is contaminated with background radiation because of the use of nuclear weapons. Such steel is unusable for many scientific and medical applications and steel made before 1945, often taken from sunken battleships, must be used instead.