science story
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Did you know: The world's first military submarine is just a big wooden crate?
this large wooden barrel is the first military submarine in the world. -
Where did the origins of the male and female symbols come from?
find out where the origin of the male and female gender symbols comes from! -
Science has sought a solution for a billion-year period that has disappeared from Earth's history
professor rebecca flowers' new research opens up new ways of thinking about the great unconformity.