TIL in the 1990s, researcher Thomas Wehr gave subjects 14 hours of darkness per night. Within weeks they naturally split into two 4-hour sleeps with a calm waking gap, matching the β€œfirst sleep/second sleep” pattern humans followed for millennia before electric lighting.
Segmented Sleep in Preindustrial Societies - PMC
 #til #todayilearned https://www.reddit.com/r/todayilearned/comments/1qxlpg5/til_in_the_1990s_researcher_thomas_wehr_gave/ image
TIL since 1977 Steven Spielberg has directed the highest-grossing film of the year in the United States four times (which is more than any other director): Raiders of the Lost Ark (1981), E.T. the Extra-Terrestrial (1982), Jurassic Park (1993), and Saving Private Ryan (1998).
List of highest-grossing films in the United States by year - Wikipedia
 #til #todayilearned https://www.reddit.com/r/todayilearned/comments/1qxljlj/til_since_1977_steven_spielberg_has_directed_the/ image
TIL a 9,000-year-old structure, like Stonehenge, was found at the bottom of Lake Michigan. It even has a carving of a mastodon
Artnet News
Is There a Prehistoric Structure Under Lake Michigan?
An arrangement of 9,000-year-old blocks of granite, 40 feet under the surface of Lake Michigan, resembles a smaller Stonehenge.
 #til #todayilearned https://www.reddit.com/r/todayilearned/comments/1qxla7i/til_a_9000yearold_structure_like_stonehenge_was/
TIL We STILL (100%) have no idea how anything smells anything
Vibration theory of olfaction - Wikipedia
 #til #todayilearned https://www.reddit.com/r/todayilearned/comments/1qxjor3/til_we_still_100_have_no_idea_how_anything_smells/
TIL that the song " this land is your land " is a protest song against crony capitalism.
This Land Is Your Land - Wikipedia
 #til #todayilearned https://www.reddit.com/r/todayilearned/comments/1qxigct/til_that_the_song_this_land_is_your_land_is_a/ image
TIL there is a Malaysian businessman and fugitive who has been wanted by Interpol since 2016 for allegedly stealing $4.5 billion from his government and still hasn’t been caught. Using that money he also funded The Wolf of Wall Street movie.
Jho Low - Wikipedia
 #til #todayilearned https://www.reddit.com/r/todayilearned/comments/1qxidhm/til_there_is_a_malaysian_businessman_and_fugitive/
TIL that as France crumbled under the Nazi invasion in June 1940, the German army engaged in a series of massacres against African soldiers in the Lyon region, in the southeast of the country. https://www.france24.com/en/20200621-the-nazi-massacre-of-senegalese-soldiers-in-french-army-80-years-on #til #todayilearned https://www.reddit.com/r/todayilearned/comments/1qxhjg7/til_that_as_france_crumbled_under_the_nazi/ image
TIL since funeral homes don't have to reveal their prices online, funeral homes can mark up services like cremations by 400% to unknowing customers. #til #todayilearned https://www.reddit.com/r/todayilearned/comments/1qxhicu/til_since_funeral_homes_dont_have_to_reveal_their/ image
TIL the highest and lowest points in the contiguous United States are less than 100 miles apart.
Badwater Basin - Wikipedia
 #til #todayilearned https://www.reddit.com/r/todayilearned/comments/1qxh7kn/til_the_highest_and_lowest_points_in_the/ image
TIL, Olive Oyl, Popeye's girlfriend, predated his existence by 10 years. She was first introduced in 1919 in the comic strip "Thimble Theatre" as love interest to Harold Hamgravy. Popeye was introduced in 1929, and quickly took over the strip, usurping its original star and taking his love interest.
Popeye - Wikipedia
 #til #todayilearned https://www.reddit.com/r/todayilearned/comments/1qxgv95/til_olive_oyl_popeyes_girlfriend_predated_his/ image