1908 Tunguska asteroid explosion no crater

The biggest recorded impact left no crater

The 1908 Tunguska event in Siberia was the largest impact event in recorded history, but its asteroid never reached the ground. The roughly 50–60-meter-wide stony asteroid exploded 5–10 kilometers above Earth, leaving no crater.

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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1908 Tunguska asteroid explosion no crater

The biggest recorded impact left no crater

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