Un fil qui vaut la peine d’être parcouru.

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The Pantheon’s sunlight marks time indoors

The Pantheon’s open roof lets sunlight move across its interior, where the light itself marks time rather than a shadow. Rain also enters, but an inclined floor and drains carry it away.

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Evolution can create new kinds of cells by joining organisms

Some major changes in evolution happened when different organisms joined together instead of only through small changes within one family line. The complex cells found in animals and plants are thought to have formed partly through such mergers.

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John Harrison's sea clock beat the required accuracy threefold

3× the required accuracy

Finding longitude at sea required a clock that lost or gained less than about six seconds per day. John Harrison's H4 sea clock eventually performed about three times better than that requirement.

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Dark roast can contain less caffeine per scoop than light roast

Roasting causes coffee beans to lose moisture and expand, changing their density. Dark-roasted beans generally take up more space for the same mass, so a scoop measured by volume may contain less coffee and therefore less caffeine. If you measure equal weights instead, the caffeine difference is usually much smaller. How you measure matters more than roast color alone.

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Early biblical texts were learned aloud together

Writing and oral performance were intertwined in the early history of biblical texts. People learned the texts by hearing and memorizing them in groups, so their history was not a simple move from spoken stories to written words.

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