Skulls have been found that are at least 7000 years old showing evidence of trepanning, where holes are scraped or drilled into the skull, probably using flint tools. It may have been done to release “evil spirits” to escape but has also been used by civilisations such as the ancient Continue Reading
Why are months so weird?
Calendars throughout history have struggled to be logical and maintain synchronism between the lunar cycle (about 29.5 days) and the solar year (about 365.25 days). Most systems include a bodge factor or intercalary months or days to bring things back into line, with varying degrees of accuracy. Sumerian The ancient Continue Reading