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Study traces first domestic cats back 9000 years

An international team of scientists revealed that all domestic cats are descended from one rodent-catching African subspecies, first tamed by Near East farmers 9 000 years ago. The researchers used genetic material from mummified cats in Egypt and remains from Viking graveyards and stone age sites.

Eratosthenes of Cyrene calculates Earth’s circumference

Eratosthenes of Cyrene was a Greek mathematician, geographer, poet, astronomer, and music theorist. He is best known for being the first person to calculate the circumference of the Earth which he did by comparing altitudes of the mid-day sun at two places a known North-South distance apart. His calculation was remarkably accurate. He was also the first to calculate the tilt of the Earth's axis.

Anniversaries of the (in)famous