How a clock became more reliable than Earth's rotation

In 1921, a clock became more reliable than Earth's rotation

The Shortt–Synchronome clock, introduced in 1921, became accurate enough to keep time more evenly than Earth's own rotation. It helped show that the planet's spin changes slightly and is not a perfect clock.

Natural selection may have started before cells existed

One major idea about the origin of life says that RNA molecules may once have copied themselves before true cells existed. If the copies varied, passed those differences on, and competed for limited resources, natural selection could already have been happening.

English remained widely used across the EU

2% of the EU population spoke it natively

After the United Kingdom left the EU, half the EU population still spoke English, and 95% of school students studied it. Just 2% spoke it natively, showing how English could serve as a shared language without many native speakers.

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How a clock became more reliable than Earth's rotation

In 1921, a clock became more reliable than Earth's rotation

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