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Largest ocean current

Southern Ocean

How do you measure ocean flow? One sverdrup equals a million cubic metres of water per second. All of the world’s rivers emptying into the ocean is 1.2 sverdrups; the largest current in the world is more than a hundred times larger.

Immovable ladder

Immovable ladder

Certain holy sites in Jerusalem and Bethlehem cannot be changed without agreement from the many local denominations. As a result, a ladder has been propped against a window ledge on the Church of the Holy Sepulchre since 1728.