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#108: Ukraine: health crisis and threat of nuclear war; IPCC report on limits to climate adaptation; Wuhan origin of covid

The world, the universe and us

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Is There a Leap Year?

The clues to this calendar come from the numbers of these stones. A 30 day month was used as the basis for some ancient calendars. Every four years we have to add a day, yes? So that's where these four station stones come in. They could have been used to keep track of the leap year situation. But just tell us how it would work. Like, what would a soof cave man gone up to stonehenge two and half thousand years ago and look at ingo that?

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